Freshwater jïshes of Sierra Leone and Liberia Annotated checklist and distribution

Didier PAUGY (1), Christian LÉVÊQUE (l), Guy G. TEUGELS (fi?), Rémy BIGORNE (1) et Raymond ROMAND (3)

SUMMARY

The authors present an up-to-date check-lis1 of the freshwater fishes of the coastal basins of Sierra Leone and Liberia. The fuma1 lists are based on the literature dafa and on the collections of fishes housed in the european and american natural history museums; part of this material was collected by fhe authors. Identifications were made according 10 the most recent revisions. lists for each river basin were established as a base for a zoogeographical work on the fiShes of West Africa.

KEY WORD~: Fish - Freshwater - West Africa - Sierra Leone - Liberia - - Fauna - Zoogeography.

RÉSUMÉ

POISSONS D'EAU DOUCE DE LA SIERRA LEONE ET DU LIBERIA: LISTE COMMENTÉE DES ESPÈCES ET DE LEUR DISTRIBUTION A partir des collections déposées dans les muséums d’histoire naturelle européens ef dans un muséum américain, réalisées en partie par les auteurs et à partir de travaux effectués dans cette zone, une mise à jour des connaissances de la faune ichtyologique des bassins côtiers de la Sierra Leone et du Liberia es1 présentée. Il a été tenu compte pour la nomenclature des révisions les plus récentes. Des listes par bassin hydrographique on1 élé établies qui doivent servir de base à un travail d’ensemble sur la zoogéographie des Poissons d’Afrique de l’Ouest.

MOTS-CLÉS : Poissons - Eau douce - Afrique de l’Ouest - Sierra Leone - Liberia - Taxinomie - Faune Zoogéographie.

(1) Hydrobiologisfes ORSTOM, Muséum nafional d’histoire nafurelle, Laboratoire d’lchfyologie générale ef appliquée, 4.3 pue Cuuier, 75,231 Paris Cedex 05, France. (2) Musée royal de l’Afrique centrale, Laborafoire d’lchfyologie, B 1980 Tervuren, Belgique. (3) Université Blaise-Pascal, Ensemble scienfifique des Cézeaux, 63177 Aubière Cedex, France.

Rev. Hydrobiol. trop. 23 (4) : 329-350 (1990). 330 D. PAUGY, C. LÉvI?QUE, G. G. TEUGELS, R. BIGORNE, R. ROMAND

(.)ur knowledge of t.he freshwater fish fauna from Sierra Leone which collections are deposited in the Sierra Leone and Liberia is still rat.her poor. A British Museum (BMNH-London) and by ORSTOM regional monograph as published for Guinée by teams in the Upper reaches of rivers basins under DAGET (1962) and for Côte-d’Ivoire by DAGET and consideration in Guinée and C&e-d’ivoire from 1980 ILTIS (1965) is lacking for Sierra Leone and the most, to 1987 and in Sierra Leone in 1989 (collections recent review for Liberia is given by SCHULTZ (1942). deposited in the Muséum national d’histoire naturel- During recent years the taxonomy of African le - Paris). freshwater fishes has often been substantially modi- fied following results of detailed revisions based on the st-udy of various new collections. This paper is an att,empt. to provide an up-to-date chec.klist of fish PHYSICAL GEOGRAPHY from Sierra Leone and Liberia. It follows three other contributions to the knowledge on taxonomy and distribution of fish in surrounding countries : Côte- A general review of physical geography, c.limatolo- d’ivoire and western Ghana (TEUGELS et al., 1988) gy and hydrography of Sierra Leone and Liberia is Guinée and Guinée Bissau (LÉVÊQUE et al., 1989) and given in DAVEAU (1971a, b) and BALARIN (1984a, b). Sierra Leone c,overs 73,326 km2. The flat toast belt Togo (PAUGY and BENECH, 1989). wit,h many estuaries and mangrove swamps is followed by int.erior plains (altit,ude 150-300 m) which rise to high plateaux and mountains in the REVTEW OF SYSTEMATTC LITERATURE AND north-east, some of t.hem (Mt Loma and Fingi) rising RECENT COLLECTIONS OF FISHES FROM to over 1,500 m. High plateaux and interior plains SIERRA LEONE AND LIBERIA are covered wit,h rain forest, part.ly degraded in the interior plain as a result. of agriculture (bush fires are The first contributions on freshwater fishes from more and more frequent). Liberia were the early papers of HUBRECHT (1881) Liberia covers 111,370 km2 and the relief is fairly and STEINDACHNER (1895) followed by the review of similar to that found in Sierra Leone. Low moun- SCHULTZ (1942). There is no similar paper for Sierra tains below 900 m are scattered t,hroughout the Leone, for which only limited information was country. The two highest peaks are the Mt Nimba published : AHL (1937), BOULENGER (1915 and 1919), (1752 mj and the Mt Wologosi (1446 m) both DAGET (1950 and 1962), CHAYTOR and WILLIAMS situated on the north-eastern border. The highlands (1966), NORMAN (1932). Short notes mainly dealing of the north-eastern borders form a watershed with with descriptions of new species were also published the Niger basin. Most of t.he major rivers originate in for both countries and for the Upper reaches of river the highlands and slow NE/SW to the Ocean. As a basins situated in Guinée and Côte d’ivoire : GÉRY result,, rivers are relatively short and of narrow (1968), HOWES (1980), LAMBERT (1958), LÉVÊQUE catchment. They tut the plateaux region, creating a and PAUGY (1982), NICHOLS and LA MONTE (1933), slow erosion process resulting in the steep “V” PAYNE and TREWAVAS (1976), THYS VAN DEN shaped valleys of most of the upland watercourses. AUDENAERDE (1968a, b, c, d; 1969a, b, c, d; 1970 The Upper courses are rocky and “torrential”, and 1974). The major part of the literature deals whereas t,he lower courses are swampy and end in with the Cyprinodontidae which were studied in wide estuary mouths. Most of the rivers exhibit detail by several authors : BERKENKAMP (1977, 1978 floodplains in their lower courses. There are no major and 1979), BERKENKAMP and ETZEL (1977 ; 1978a, b ; natural freshwater lakes but quit.e large coastal 1979a, b; 1980; 1982 and 1983a, b), CLAUSEN (1966), lagoons (freshwater and brackish). ETZEL (1977; 1978a, b, c), ETZEL and BERKENKAMP The surfaces of the main river basins (in km2) (1979; 1980a, b), LADIGES and ROLOFF (1973), estimated from 1/1,000,000 maps are : Litt,les Scar- NEUMANN (1976), RADDA (1976), ROLOFF (1965; c.ies or Kaba of which Mongo river is the principal 1971a, b), ROLOFF and LADIGES (1972), ROMAND tributary (18,530), Rokel or Rockel or Seli (8,440), (1978a, b; 1979; 1980; 19%; 1986), VANDERMISSEN Jong or Pampana or Taja or Taya or Taia or Taye (lE)77a, b; 1978), VANDERMISSEN et Ul. (1980). (7,750), Sewa or Bagbe or Bagbwe of which Waanje Since two decades several new collections from river is the principal tributary (19,050), Moa (18,760), these countries were deposited in different natural Mano or Gbea (8,260), Fisherman lake (1,880), Lofa history museums. We should mention in particular (13,200), St Paul (18,180), Du-Farmington (>7,000), the large surveys undertaken by THYS VAN DEN St John (> 14,000), Cess or Cestos or Nuon (Liberia) AUDENAERDE in Sierra Leone and Liberia whose or Nipou (Côte-d’Ivoire (11,920) (fig. 1). The fish collections are housed by the Musée royal d’Afrique fauna of t.he Kolenté or Great Scarcies river has been centrale (MRAC-Tervuren), by Payne in western t.reated in an other paper (LÉVÊQUE et al., 1989) and

R~U. Hydrobiol. irop. 23 (4) : .329-350 (19.90). FRESHWATER FISHES OF SIERRA LEONE AND LIBERIA 331

> I I P’E 12’E 10’E

REETOW

12:E 1q”E

FIG. 1. - Hydrographical map of Sierra Leone and Liberia (main basins). Le réseau hydrographique de la Sierra Leone et du Liberia (principaux bassins).

TABLE 1 no other samples were carried out since this publica- Observed species richness and predicted species richness in tion. SO we do not consider this basin here. function of the area of t,he basin (after t.he relationships The climate is hot and wet. There is a wet season established by DAGET and ILTIS, 1965 and by HUGUENY, (from April-May to October-November) and a dry 1989a) season. Mean total annual rainfall is high and drops Richesse spécifique observée ef théorique calculée en foncfion de along a SW/NE axis from 4,000-5,000 mm along thc la superfkie des bassins versanfs (d’après les relafions établies toast to 2,000 mm on the north-eastern border. In par DAGET et ILT~S, 1965 et par HUGUENY, 1989a) Sierra Leone rains are heaviest in August, but in Liberia there is a break in intensity (the mid dry Bassin Superficie Richesse Richesse Richesse period) in July-August. (h2) spécifique .&ciRque spécifique The main rivers flow a11year round. Only few data observée lhéolique are known about. discharge. BALARIN (1984a) men- tionned an average per year of 123 m3 SI for the Mano river (range from 50 to 600 rG s-l) and a range of 70-2,500 m3 s-l for the St Paul river. CHAYTOR (1969) gave some data for the hydrological regime of the river Jong. The peak occurs in August-Septem- ber and the minimum in March. Water temperature in the river Jong (CHAYTOR, 1969) ranges from 25 “C >7000 1 42-43 1 >46 >39 (September-October) to 31 “C (April-May). This river 1 S14000 1 55-56 1 >55 1 >49 was found to be acidic throughout the year and 1 11920 1 61-62 1 52-53 1 46-47 possessed a low dissolved chemical content (c.onduc-

Rev. Hydrobiol. trop. 23 (4) : 329-350 (1990) C>C ,, 3 3, D. pAUCkY, C. LtivZikJUE, G. G. TEUGELS, R. BIGORNE, R. ROMAND tivity range : 10-30 ~J.Scm-l) (WRIGHT, 1982 and hIast..acembelidae : (TRAVERS, 1984a. b; in prrp.). 1985). Table II summarizes our knowledge on fish distribution in the major river syst,ems. Symbols used in this table are explainrd as follows : METHODS - when a valid species has been originally described from a river system, a black spot is used; The CLOFFA 1 and 2 (DAGET et al., 1984 and - preserved specimens from a river system hou- 19X6), covering a11 African freshwater tish families sed in a museum are indicated by a block letter except the Cichlidae, provide a current list. of species refering t,o the museum : with t-heir type localit.y, full synonymies and referen- ces to papfbrs where the speries is quoted. The aim of B : British Musrum (Natural History), some specimens collected in Nort.h Sherbo District this papcr is not. to repeat. CLOFFA. Therefore, we restricted the list of sy.nonymies to those aut.hors ancl Pujehun were respectively considered by us who ronsidered the specles with particular reference from Jong and Moa basins. These samples are t.o t.hcl Sierra Leone and Liberia freshwaters. braketed, Since CLOFFA was published, subsequent taxo- L : Rijksmuseum van naturrlijke Hist.orie, Leiden, nomic papers int,roduced new data for the following P : Muséum nat-ional d’histoire naturelle, Paris, t.axa, which havr been t.aken into account in this T : Musée royal de l’Afrique Centrale, Tervuren, paper : U : United Stat.es National museum, Washington, Z : Zoologisc.hes Staatinstituut und Zoologisches Polyptrridae : Polypferux (GOSSE, 1988). Museum, Hambourg ; Clupeidae : (WHITEHEAD, 1986), Pellonulinae - when a species has been mentioned in a paper, (GOUHÈNE, 1988; GOURÈNE and TEUGELS, 19)39). but when no material was preserved in a Museum, a reference number is used refering to the public,ation, Morrnyridae : illarcusenius (JÉGLJ and LEVEQUE, listed in the text, of the table II ; 1984a ; BIGORNE and PAUGY, 1990), Hippopo- - when a species is not preserved or net, ment.io- famyrus (LÉ~EQuE and BIGORNE, 1985a), Mor- ned in a paper but when it: has been observed by one nuyrus (LÉVÈQUE and BIGORNE, 1985b), Morm- of the authors, it is indicat.ed by a cross (+); yrops (BIGORNE, 1987), Brienomyrus and lsich- - when a species is mentioned in the CLOFFA fhys (BIGORNE. 1989). from this area without. precise reference, it is : zJhfes s.lafo (PAUGY, l!%%?a, b; indicated by a C. 1X%), Hydrocynus (BREWSTER, 1986 ; PAUGI- and GuÉ~AN, 1989), Petersiini (PAUGY, 1990). : (LÉVÊQUE and BIGORNE, 1987). Cyprinidae : Labeo (JÉGu and LÉVEQUE, 198413; TAXONOMICALLY ANNOTATED CHECKLIST REID, 1985), Haiamas and Lepfocypris (LÉvÈ- QUE ami BIGORNE, 1983; HOWES and TEUGELS, POLYPTERIDAE 1%9), Barbus (LÉv~QuE, 1983; 1989a, b ; LÉ~ÈQuE ef al., 1987a, b; 1988; LÉVÈQUE and - Polypferus palmas Ayres, 1850 (hÉGAN, 1990). Polypterus büftikoferi Steindachner, 1891 from Bagridae : Chrysichfhys (RISCH, 1981 ; 1986 ; rivers Mahfa and Sulymah (riv. Moa), Liberia. RISCH and THYS v.4~ DEN AUDENAERDE, 1985). Polypterus refropinnis lornei Boulenger, 1911 see Schilbeidae : (DE Vos, 1983; 1984; DE Vos and GOSSE (1988). LÉVÈQUE, 1983; LÉVÊQUE and HERBINET, Polypferus lourei Boulenger, 1911 see GOSSE (1988). 19HiZ). Most. part of the specimens were caught in East Amphiliidae : (SKELTON, 1984; 1989). Sierra Leone and in the major basins in Liberia, but Clariidae : (TEUGELS, 1981 ; 1982; 1986; TEUGELS t.his species was also recorded at Nanna Kru et ais.. in press). (certainly Puebla river) in Southeastern Liberia near Syngnathidae : (DAWSON, 1981 ; 1984). the Côte-d’Ivoire boundary. Channidae : Parachanna (BONOU and TEUGELS, 1985). CLUPEIDAE Cichlidae : Hemichromis (WILSON and LOISELLE, - Pellonula leonensis Boulenger, 1916 1980), Parafilapia (GREENWOOD, 1985), Pelma- Pellonula afzeliuzi Johnels, 1954 see WHITEHEAD tochromine (GREENWOOD, 1987), Tilapia s.l. (1986). (TREWAVAS, 1983), Tylochromis (STIASSNY, Microthrissa miri Daget, 1954 see WHITEHEAD 1989). (1986).

Heu. Hydrobinl. trop. 23 (4) : 329-.X0 (1990). TABLE II

Presence of species in the different, river systems. See int,roduction for signification of let.ters and symbols. The numbers refer to papers where t.he species is mentionned : 1 - MCCARTON and PAYNE (1955) ; ‘~-PA~NE and MCCARTON (1983) ; 3-STEINDACHNER (1895); 1- HUBRECHT (18Sl); 5- DAGET (1950); S-TREU’AVAS (1983); 7-NORMA~ (1032); fi-FOWLER (l%XJ); C)-DAGET (1952); 10 - ROMAND (1986) ; 11 -VAN DEN NIEUWENHUIZEN (1972) Présence des esptkes dans les diffkents hassins. F’oir l’infroduction pour la significafion des leftres ef des signes. Les nombres font réfirences aus publications dans lesquelles les espéces sont signalées : ooir ci-dessus 334 D. PAUGY, C. LÉVÊQUE, G. G. TEUGELS, R. BIGORNE, R. ROMAND

Rev. Hydrobiol. trop. 23 (4) : 329-350 (1990). FRESHWATER FISHES OF SIERRA LEONE AND LIBERIA 335

A. foddi . I l I I I I I I I I A. viride I I 1 10 1 T 1 1 10 1

E. ann1tla1us T 8 E. m~~reu.~ + E. bnrmoiensis T T U T T TU U T + R 1

CHAXNIL)AE P. ob.~curu I ) 5(B) 1 T 1 I 1 3 1 l I I l CI~STKoI’oWID,~E L. nihIicu.s 1 T 1 P 1 RT 1 T 1 T 1 I I I I 1 T )

CICHLIDAE < .t....I^.: -

Rev. Hydrobiol. trop. 23 (4) : 329-350 (1990). 336 D. PAUGY, C:. LÉVÊQUE, G. G. TEUGELS, R. BIGORNE. R. ROMANL)

SPECIES IL.Scar.l Rokel 1 Jong 1 Sewa 1 Moa 1 Mano IF.Lake Lufa 1StPaulj Du ISlJohnI Cess

GOBIIDAE C. lmerisrrijp IPITITI I ITIJI 3 I I u I u I 1 T N. mindroni I I @) I I I I I I

Microfhrissa normanae Whitehead, 1986 see Gou- Present in the major basins in Sierra Leone and RÈNE and TEUGELS (1989). Liberia, this species was also recorded at Nanna Kru Microfhrissa sp. Daget, 1962 see GOURÈNE and (certainly Puebla river) in Southeastern Liberia near TEUGELS (1989). the Côte-d’Ivoire boundary. - Pellonula oorax Günther, 1868 - Brienomyrus longianalis (Boulenger, 1901) - Sierrafhrissa leonensis Thys van den Audenaerde, - Hippopofamyrus paugyi Levêque and Bigorne, 1969 1985 Hippopofamyrus harringfoni (non Boulenger, 1905) in DAGET (1962). - (Günther, 1868) Rec,ently described, this species is apparently Nofopferus afer Günther, 1868 in BOULENGER widespread in the Upper guinean zone, as defined by (1919). ROBERT~ (1975). Present in t,he major basins in Sierra Leone and - Isichfhys henryi Gill, 1863 Liberia, t.his species was also recorded at Nanna Kru Mormyrops henryi (Gill, 1563) in HUBRECHT (certainly Puebla river) in Southeastern Liberia near (1881). the GOte-d’ivoire boundary. Mormyrus henryi (Gill, 1863) in STEINDACHNER - Xenomysfus nigri (Günther, 1868) (1895). Ment,ioned by DAGET (1950) from the Jong and - Marcusenius menfo (Boulenger, 1890) Sewa rivers (Sierra Leone), and by STEINDACHNER Gnafhonemus menfo (Boulenger, 1890) in STEIN- (1895) from Fisherman lake (Liberia). We examined DACHNER (1895), BOULENGER (1919) and t.wo specimens from a river near Glap in t,he Sherbo SCHULTZ (1942). District. (Sierra Leone) and housed in the Tervuren - Marcusenius meronai Bigorne and Paugy (1990), Museum. The species have never been recorded from originally described from Rokel and Sewa rivers Guinde nor Côte-d’Ivoire. - Marcusenius fhomasi Boulenger (1916) I\IIORMYRTDAE Gnafhonemus fhomasi Boulenger, 1916 in Bou- - Brienomyrus brachyisfius (Gill, 1863) LENGER (1919). Mornyrus liberiensis Steindachner, 1895. - Marcusenius ussheri (Günther, 1867) Marcusenius brachyisfius Gill, 1863 in BOULENGER Mormyrus ussheri Günther, 1867 in STEIN- (1919) and CHAYTOR and WILIAMS (1966). DACHNER (1895). ? Marcusenius sphekodes (non Sauvage, 1879) in Gnafhonemus ussheri (Günther, 1867) in SCHULTZ NORMAN (1932). (1942).

Reu, Hydrohiol. trop. 23 (4) : 329350 (1990). FRESHWATER FISHES OF SIERRA LEONE AND LIBERIA 337

Gnafhonemus bruyerei Pellegrin, 1904 see JÉGU and Alesfes longipinnis (Günther, 1864) see PAUGY LÉ~ÊQuE (1984a). (1986) in STEINDACHNER (1895), BOULENGER Occurs only in eastern basins of Liberia. Wides- (1919), SCHULTZ (1942) and CHAYTOR and WIL- pread in Cote-d’ivoire and west.ern Ghana. LIAMS (1966). - Mormyrops anguilloides (Linnaeus, 1758) chaperi Sauvage, 1882 see PALIGY, 1982a Mormyrops deliciosus (Leach, 1818) see BIGORNE - macrolepidofus Valenciennes, 1849 (1987) in HUBRECHT (1881), STEINDACHNER Alesfes macrolepidofus (Valenciennes, 1849) see (1895) and SCHULTZ (1942). PAUGY (1986) in HUBRECHT (1881), STEIN- Mormyrops curoiceps Roman, 1966 see BIGORNE DACHNER (1895) and BOULENGER (1919). (1987). Alesfes rufilus Boulenger, 1916 see PAUGY (1982b) Mormyrops longiceps (Günther, 1867) see BIGORNE in BOULENGER (1919), FOWLER (1919; 1950) and (1987). SCHULTZ (1942). - Mormyrops breuiceps Steindachner, 1895 - Brycinus nurse (Rüppell, 1832) Mormyrops bougouribaensis Roman, 1966 see Brachyalesfes nurse (Rüppell, 1832) see PAUGY BIGORNE (1987). (1986) in HUBRECHT (1881). Mormyrops elongafus Norman, 1935 see BIGORNE Alesfes nurse (Rüppell, 1832) see PAUGY (1986) in (1987). BOULENGER (1919) and SCHULTZ (1942). - Mormyrops caballus Pellegrin, 1927 - Brycinus nigricauda (Thys van den Audenaerde, Mormyrops oudofi (non Daget, 1954) in 1974) Mc CARTON and PAYNE (1985). Known only Alesfes nigricauda Thys van den Audenaerde, 1974 from the Sewa river. see PAUGY (1986). - Mormyrus fapirus Pappenheim, 1905 - Hydrocynus forskalii (Cuvier, 1819) Mormyrus goheeni Fowler, 1919 see LÉVÊQUE Hydrocyon forskalii Cuvier, 1819. and BIGORNE (1985). - Ladigesia roloffi Géry, 1968 This species is recorded from Upper and Lower This small characid was originally described from Guinea zones as defined by ROBERT~ (1975). In the Kasewe Forest (Sierra Leone). VAN DEN NIEU- between it has not been collected. WENHUISEN (1972) reported this species from the - Pefrocephalus bouei (Valenciennes, 1846) Firestone Plantation in Liberia. - Pefrocephalus pellegrini Poll, 1941 - Lepidarchus adonis Roberts, 1966 - Pefrocephalus simus Sauvage, 1879 Specimens from the Black river on the Sherbo Species level systematics of the Pefrocepha- Island (Sierra Leone) are housed in t.he BMNH lus are still poorly known. The specimens from Sierra collections. VAN DEN NIEUWENHUISEN (1972) reports Leone (Little Scarcies, Rokel and Jong) correspond the species from the Firestone Plantation (Liberia). with those described by STEINDACHNER (1895) as - Micralesfes occidenfalis (Günther, 1899) Mormyrus fenuicauda subsequently synonymised Pefersius occidenfalis Günther, 1899 in SCHULTZ with P. simus by BOULENGER (1898). The status of (1942). M. fenuicauda is presently being examined by Bigor- - Rhabdalesfes sepfenfrionalis (Boulenger, 1911) ne (in prep.). Pefersius sepfenfrionalis Boulenger, 1911. HEPSETIDAE Rhabdalesfes infermedius Blache and Miton, 1960 see PAUGY 1990. - Hepsefus odoe (Bloch, 1794) Sarcodaces odoe (Bloch, 1794) in STEINDACHNER DISTICHODONTIDAE (1895) and BOULENGER (1919). - Ichfhyborus quadrilineafus (Pellegrin, 1904) CHARACIDAE Neoborus quadrilineafus Pellegrin, 1904. Paugy (1986) reviewed the genus Alesfes sensu lafo LÉVÊQUE and BIGORNE (1987) reviewed meristic and recognized two genera : Alesfes sensu stricto and and morphometric characteristics of this species as Brycinus. Only the latter is present in the area well as its distribution. It is close to the Zairian studied. species Ichfhyborus ornafa. - Brycinus imberi (Peters, 1852) - ansorgii Boulenger, 1911 Alesfes imberi Peters, 1852 see PAUGY (1986). - Nannocharax fasciafus Günther, 1867 - (Günther, 1864) Nannocharax seyboldi Schultz, 1942 see COENEN Brachyalesfes longipinnis Günther, 1864 see (in prep.). PAUGY (1986) in HUBRECHT (1881). - Neofebias unifasciafus Steindachner, 1895

R~U. Hydrobiol. trop. 23 (4) : 329-350 (ISN). 338 D. PAUGY, C. LÉVÊQUE, G. G. TEUGELS, R. BIGORNE, R. ROMAND

Nannaefhiops unifaeniafus (non Steindachner) in - Barbus fiekoroi Lévèque, Teugels and Thys van DAGET (1963). den Audenaerde, 1987 Barbus frispilos (parfim, non Bleeker) in DAGET CYPRINIDAE (1962). - Barbus ablabes (Bleecker, 1863) - Barbus frispiloides Lévêque, Teugels and Thys - Barbus bagbwensis Norman, 1932 van den Audenaerde, 1987 Described from the Bagbe (Sewa) river and Described from a single specimen from river Mano collected also in t.he Jong river. (Liberia); differs markedly from other three spotted barbs by its elongated body. - Barbus bigornei Lévêque, Teugels and Thys van den Audenaerde, 1988 - Barbus frispilos (Bleeker, 1863) Types were described from the Mongo river (Upper - Barbus parawaldroni Lévêque, Thys van den Little Scarcies). Specimens were collected also in the Audenaerde and Traoré, 1987 .Jong and Sewa rivers and in western Cote-d’ivoire. Replaces Barbus waldroni in western Côt,e-d’ivoire - Barbus boboi Schultz, 1942 and eastern Liberia. This species is known only from the types - Barbus sacrafus Daget, 1963 collect,ed in Gibi Mountains (Farmington system) in Barbus gruveli (non Pellegrin, 1911) in DAGET Liberia. Other specimens mentioned from eastern (1962). Liberia and western Côte-d’Ivoire were misidentified - Barbus wurfzi Pellegrin, 1908 (LÉVÊQUE et al., 1988). Barbodes (Barbus) wurfzi Pellegrin, 1908 in - Barbus eburneensis Poll, 1941 CHAYTOR and WILLIAMS (1966). Barbus pomoi Schultz, 1942 see DAGET (1962). Varicorhinus wurfzi (Pellegrin, 1908). Barbus frispilos (non Bleecker) in NORMAN (1932) According to Reid (1985), two sub-groups of Labeo according to TREWAVAS (1974) and in PELLEGRIN occur in this area : (1921) according to LÉVEQUE (1983). - Labeo coubie group : specimens from Liberia - Barbus foufensis Lévéque, Teugels and Thys van and Sierra Leone have been refered as L. coubie den Audenaerde, 1988 Rüppell, 1832 or Labeo curriei Fowler, 1919. Barbus spurelli non Boulenger, 1913 in DAGET The taxonomy is not clear and more material (1962). and research are needed. L. curriei was des- Apparently restricted to the Fouta Djalon area in cribed from the St Paul river. It is close to Guinea. Types were collected in t.he Upper Little L. walkeri Günther, 1902 from Ghana and Scarcies river. L. brachypoma Günther, 1868 from Lagos, - Barbus inaequalis Lévêque, Teugels and Thys Ghana, a vague locality (REID, 1985). Labeo van den Audenaerde, 1988 rouanefi Daget, 1962 from the Konkouré river Rarbus boboi (non Schultz) in DAGET (1952 and (Guinea) belongs also to the L. coubie group. 1963), DAGET and TLTIS (1965) and LÉVÊQUE (1983). - Labeo forskalii group includes : - Barbus lauzannei Lévêque and Paugy, 1982 - Labeo alluaudi Pellegrin, 1933 Known from the Upper reaches of the Lofa river in Originally desc.ribed from Cavally river (Côte- Guinea. d’ivoire) and recorded from Cess (Liberia) and Bagbe - Barbus Ieonensis Boulenger, 1915 (Sierra Leone) rivers. - ? Labeo obscurus Pellegrin, 1908 - Barbus liberiensis Steindachner, 1895 Labeo chariensis Pellegrin 1904 in NORMAN (1932). Barbus campfacanfhus var. liberiensis Stein- This species is very close to L. parvus and L. dachner, 1895. ogunensis. JÉGU and LÉVEQUE (1984) mentioned that ? Barbus frispilos (non Bleeker) in CHAYTOR and L. parvus Boulenger, 1902 is widely distributed from WILLIAMS (1966). the Zaïre basin to West Africa. For REID (1985), Many museum specimens were collected in small West. African sahelian populations belong to streams in the Freetown Peninsula. L. ogunensis Boulenger, 1910 described from the - Barbus macrops Boulenger, 1911 Ogun river (Nigeria), which “most closely resembles Mannichfhys lucilae Schultz, 1942 see HOPSON and to L. parvus”. REID (1985) also considered HOPSON (1965). L. obscurus from the Konkouré river as a valid A widespread species known from sahelian and species, whereas he noticed that it closely resembles guinean provinces. L. ogunensis and may be a rapid water form of that - Barbus puncfifaeniafus Daget., 1954 species. This group of species obviously needs a

Reu.Hgdrobiof. frop. 23 (4) : .329-559(1999). FRESHWATER FISHES OF SIERRA LEONE AND LIBERIA 339 thorough systematic revision. In the meantime we - Nofoglanidium maculafum (Boulenger, 1916) continue to consider L. obscurus as a valid species. Liauchenoglanis maculafus Boulenger, 1916. - Labeo parvus Boulenger, 1902 Heferobranchus sp. in CHAYTOR and WILLIAMS Labeo chariensis Pellegrin, 1904 in NORMAN (1932). (1966). - Lepfocypris guineensis (Daget, 1962) - Nofoglanibium fhomasi Boulenger, 1916 Barilius guineensis Daget, 1962. SCHILBEIDAE Taxonomy and distribution of this species are discussed by LÉV~QUE and BIGORNE (1983). It is The systematics of the family has been studied by vicariant. species of Lepfocypris niloficus from sahe- DE Vos (1984) and taxonomy and full synonymy of lian rivers. West African species of Schilbe (Eufropius) have been discussed by DE Vos (1983) and DE Vos and - Lepfocypris faiaensis Howes and Teugels, 1989 G. L. LÉVÈQUE (1983). - Prolabeo bafesi Norman, 1932 - Parailia (Parailia) spiniserrafa Svensson, 1933 Originally described from the Bagbe (Sewa) river; Described from the Gambia river, t.he species was we recently found this species in Rokel and Jong collected in the river Njala (Jong) in Sierra Leone. rivers. - Schilbe (Eufropius) mandibularis (Günther, 1867) - Raiamas scarciensis Howes and Teugels, 1989 Eufropius liberiensis Hubrecht, 1881 in SCHULTZ - Raiamas sfeindachneri (Pellegrin, 1908) (1942). Barilius sfeindachneri Pellegrin, 1908 in Bou- Eufropius menfalis Boulenger, 1901 in DAGET LENGER (1919) and NORMAN (19%). (1952). Barilius silex Schultz, 1942 in DAGET (1963) see - Schilbe (Eufropius) micropogon (Trewavas, 1943) LÉVÊQUE and BIGORNE (1983). Taxonomy, synonymies and distribut.ion have - Schilbe (Eufropius) niloficus (Rüppell, 1829) Eufropius alfipinnis Steindachner, 1595. been discussed in LÉVÊQUE and BIGORNE (1983). This is a vicariant. species of R. senegalensis from Eufropius adansonii Valenciennes, 1839 in Hu- sahelian rivers. BRECHT (1881). - Raiamas nigeriensis (Daget, 1959) - Schilbe (Schilbe) mysfus (Linnaeus, 1758). Barilius nigeriensis Daget, 1959. This species is found in some toast-a1 basins in AMPHILIIDAE Sierra Leone (LÉVSQUE and BIGORNE, 1983). - afesuensis Boulenger, 1904 Amphilius picfus Nichols and La Monte, 1933 in BAGRIDAE SCHULTZ (1942) see LAMBERT (1958). - Auchenoglanis occidenfalis (Valenciennes, 1840) Sympatric with A. plafychir in the St John river The taxonomy of the genus Chrysichfhys has been but replaces the latter east,ward t,o the Mono river. reviewed by RISCH (1986). We refer to this paper for - Amphilius plafychir (Günther, 1864) details on synonymies. Amphilius grammafophorus Pellegrin, 1913 in - Chrysichfhys aurafus (Geoffroy SainbHilaire, DAGET (1950), NORMAN (1932) and CHAYTOR 1809) and WILLIAMS (1966) see SKELTON (1984). Chrysichfhys filamenfosus Boulenger, 1912 in Amphilius grammafophorus marmorafus Daget, SCHULTZ (1942) see RISCH (1986). 1963. - Chrysichfhys johnelsi Daget, 1959 - Amphilius rheophilus Daget, 1959 Described from t,he Gambia river where it, was Known from Guinea and Lit.tle Scarcies river. considered t,o be endemic for a long time. RISCH and - Doumea chappuisi Pellegrin, 1933 THYS VAN DEN AUDENAERDE (1985) extended the - Paramphilius frichomycferoides Pellegrin, 1907 distribution area as far as the Pra river (Ghana). Known from Fouta Djalon area in Guinea, - Chrysichfhys maurus (Valenciennes, 1839) including Upper Lit,tle Scarcies. A single specimen Chrysichfhys velifer Norman, 1928. from the Lofa river. Chrysichfhys walkeri (non Günther) in BOULENGER - Paramphilius firesfonei Schultz, 1942 (1919). Only known by the types from St Paul and Du - Chrysichfhys nigrodigifafus (Lacépède, 1803) rivers near the toast in Liberia. Chrysichfhys furcafus Günther, 1864. - Paramphilius feugelsi Skelton, 1989 Chrysichfhys bueffikoferi Steindachner, 1895. Known by the types collected in a small tributary - Chrysichfhys feugelsi Risch, 1987 of the Mamou river (Little Scarcies system), by a

R~U. Hydrobiol. trop. 23 (4) : 329-350 (1990). 3-M D. P4uGY, C. LÉVÈQUE, G. G. TEUGELS, R. BIGORNE, R. RO>fAND specimen from a small trihutary of the Kogon basin Chiloglanis niloficus uraferlofi Daget, 1954 in in Guinea and by a specimen from t.he Falata river in LA%~BERT (1958). Guinea. - Chiloglanis polyodon Norman, 1932 Only known from the Bagbe river.

TEUGELS (1986) provided a revision and full - Microsynodonfis polli Lambert, 1958 synonymy for t-he African species of the genus Only known from the St John river. Clarias. - Mochokiella paynei Howes, 1980 - Clarius anguillaris (Linnaeus, 1758) Only known from the t.ype locality (Kasewe Forest According t.0 TEUGELS (1986), the specimens Reserve, Sierra Leone). A Small sized spec.ies (max. 36 Microsynodonfis Mochokus. identified Clarias senrgalensis by CHAYTOR (1969) mm SL) close t,o and from river Jong, are C. anguillaris. TEUGELS was - Synodonfis annecfens Boulenger, 1911 also able t,o examine specimens from Rokel river Known from Gambia to Jong river. housed in the Frankfurt Museum and noticed that - Synodonfis ansorgii Boulenger, 1911 both populations (Jong and Rokel) should be Synodonfis gambiensis (non Giinther) in POLL considered as disjunct populations : bot.h rivers are (1971). entirrly situat.ed within the rain forest while most Known from Geba, Sewa and Jong basins. ot.her specimens of C. anguillaris are located in - Synodonfis fhysi Poll, 1971 Savannah areas. Described from Little Scarcies and apparently - Clarias bueffikoferi Steindachner, 1895 restricted between Konkouré and Jong rivers. Clarias liberiensis Steindachner, 1895 in Bou- - Synodonfis waferlofi Daget, 1962 LENGER (1919), NICHOLS and LA MONTE (1933), Apparently the only widespread species of Syno- SC:HULTZ (1942), DAGET (1950) and CHAYTOR donfis in Sierra Leone and Liberia. and WILLIAMS (1966). Clarias bulumae Steindachner, 1895. Clarias dorsimormorafus Ahl, 1937. - Aphyosemion brueningi (Roloff, 1971) Clarias angolensis (non Steindachner) in FOWLER Roloffia brueningi Roloff, 1971. (1919) and SCHULTZ (1942). - Aphyosemion efzeli (Berkenkamp, 1979) - Clarias laeviceps dialonensis Daget, 1962 Roloffia efzeli Berkenkamp, 1979. Clarias dialonensis Daget, 1962. This species is very close to il. geryi. Specimens from coastal rivers in Sierra Leone helong to this sub-spec.ies. - Aphyosemion geryi Lambert, 1958 Aphyosemion guineense geryi Lambert, 1958. - Clarias laeoiceps laeoiceps Gill, 1862 Holoffia geryi (Lambert, 1958). Clarias uandenhoufei Poll, 1941 in DAGET (1952; 1963). - Aphyosemion guineense Daget, 1954 from Kene- Clarias walkeri (non Günther, 1896) in NORMAN ma district (Moa river) in BERKENKAMP and ETZEL, (1932). 1979b. Clarias submarginafus (non Peters) in NORMAN - Aphyosemion jeanpoli (Berkenkamp and Etzel, (1932). 1979) Clarias salae (non Hubrecht) in DAGET (1952; Roloffia jeanpoli Berkenkamp and Etzel, 1979. 1963). Roloffia melanfereon (non Fowler) in GRIMM (1974). - Clarias salae Hubrecht, 1881 - Aphyosemion liberiense (Boulenger, 1908) TEUUELS et al. (in press) revised the species of the Haplochilus liberiensis Boulenger, 1908. genus Heferobranchus. Roloffia liberiensis (Boulenger, 1908). Panchax liberiensis (Boulenger, 1908) in AHL - Heferobranchus isopferus Bleeker, 1863 (1924). - Heferobranchus longifilis Valenciennes, 1540 Aphyosemion calabaricus Ahl, 1936 see RADDA (1976). MALA~TERURIDAE Epiplafys melanfereon Fowler, 1950 see BERKEN- - Malapferurus elecfricus (Gmelin, 1789) KAMP and ETZEL (1979). Aphyosemion berfholdi (Roloff, 1965) see RADDA (1976). - Chiloglanis normani Pellegrin, 1933 Roloffia fredrodi Vandersmissen, Etzel and Ber- - Chiloglanis occidenfalis Pellegrin, 1933 kenkamp, 1980 see WILDEKAMP (1981).

R~U. Hydrohiol. frop. 23 (4) : 329350 (1990). FRESHWATER FISHES OF SIERRA LEONE AND LIBERIA 341

- Aphyosemion maeseni Poll, 1941 - Aplocheilichfhys schioefzi Scheel, 1968 Roloffia maeseni (Poll, 1941) in CLAUSEN, 1967. Aplocheilichfhys monikae Berkenkamp and Etzel, Aphyosemion liberiense (non Boulenger) in 1976 see HUBER (1982). DAGET (1952; 1963). Aplocheilichfhys macrurus (Duméril, 1861) in A. maeseni, A. viride and A. liberiense are sibling LAMBERT (1958). species ; they are difficult to differenciate by Micropanchax schioefzi (Scheel, 1968) in HUBER morphometrical eharacters. (1982). - Aphyosemion monroviae (Roloff and Ladiges, Aplocheilichfhys ferofali Berkenkamp and Etzel, 1972). 1981. Roloffa monroviae Roloff and Ladiges, 1972. - Aplocheilichfhys spilauchen (Duméril, 1861) Occurs mainly in Liberia. Haplochilus spilauchen (Duméril, 1861). - Aphyosemion occidentale Clausen, 1966 Epiplafys spilauchen (Duméril, 1861) in SCHULTZ Fundulus sjoesfedfi (non Lonnberg) in BOULENGER (1942), DAGET (1950) and FOWLER (1950). (1919). Epiplafys fypus Bleeker, 1863 see WILDEKAMP, Aphyosemion sjoesfedfi (non Lonnberg) in CHAYTOR ROMAND and SCHEEL (1986). and WILLIAMS (1966). Epiplafys fschiloangensis ,4111, 1928 see HUBER Roloffia occidenfalis (Clausen, 1966) in SCHEEL (1981). (1966). This species is restricted to brackish water. Fundulopanehaz occidenfalis (Clausen, 1966) in - Epiplafys annulafus (Boulenger, 1915) PARENT~ (1981). Haplochilus annulafus Boulenger, 1915. Aphyosemion huwaldi Berkenkamp and Etsel, Pseudepiplafys annulafus (Boulenger, 1915) in 1980 in ROMAND (1985). CLAUSEN (1967). - Aphyosemion roloffi Roloff, 1936 Aplocheilus annulafus (Boulenger, 1915) in RADDA Roloffia chayfori Roloff, 1971 see RADDA (1976). (1976). - Epiplafys azureus Berkenkamp and Etzel, 1983 - Aphyosemion schmiffi (Romand, 1979) Roloffia schmiffi Romand, 1979. May be a sy~lonym of E. olbrechfsi which is found Restricted to eastern Liberia. in the same area in eastern Liberia and presents the same color pat,tern. - Aphyosemion foddi Clausen, 1966 - Epiplafys barmoiensis Scheel, 1968 Aphyosemion occidentale foddi Clausen, 1966. Epiplafys bifasciafus (non Steindachner) in Roloffia occidenfalis foddi (Clausen, 1966). Restricted to lower G. C. little Scarcies. SCHULTZ (1942), DAGET (1950) and LAMBERT (1958). - Aphyosemion viride (Ladiges and Roloff, 1973) Aplocheilus barmoiensis (Scheel, 1968) in RADDA Roloffia viridis Ladiges and Roloff, 1973. (1976). Present only in the north-eastern region of Epiplafys Zokoensis Berkenkamp and Etzel, 1978 Liberia. see ROMAND (1980). - Aplocheilichfhys kabae Daget, 1962 - Epiplafys bifasciafus (Steindachner, 1881) Known only from the types specimens from the Haplochilus bifasciafus Steindachner, 1881. Kaba river, a tributary of the Litt.le Scarcies river in Panchax bifasciafus (St,eindac.hner, 1881) in AHL Guinea. (1924). - Aplocheilichfhys nimbaensis (Daget, 1948) Panchax taeniafus Pfaff, 1933 see DAGET and ILTIS Haplocheilichfhys nimbaensis Daget,, 1948 in (1965). DAGET (1952). Aplocheilus bifasciafus (Steindachner, 1881) in Aplocheilichfhys macrurus (non Boulenger, 1904) RADDA (1976). in DAGET (1954). - Epiplafys coccinafus Berkenkamp and Etzel, 1982 Micropanchax nimbaensis (Daget, 1948) in HUBER Known only from the type locality in the Upper (1981). Sewa river. Occurs only in north-eastern Liberia. - Epiplafus dagefi Poll. 1953 - Aplocheilichfhys normani Ahl, 1928 Ep>plafys chiperi (non Sauvage) in SCHULTZ Micropanchax macrurus manni Schultz, 1942 in (1942). DAGET (1950)and FOWLER (1950)see CLAUSEN H&plochilus infrafasciafus (non Günther) in (1967). STEINDACHNER (1895). Aplocheilichfhys gambiensis Svensson, 1933 see Epiplafys sexfasciafus (non Gill) in FOWLER DAGET and ILTIS (1965). (1950).

Rat. Hydrobiol. trop. 23 (4) : 329-350 (1990). 342 II. PAUGY, c. LÉVÈQUE, G. G. TEIJGELS, R. BIGORNE, R. ROMAND

Epiplafys fasciolafus (Günther, 1866) Haplochilus fasciolafus Günt,her, 1866. - Lafes niloficus (Linnaeus. 1758) Epiplafys sexfasciafus (no11 Gill) in SCHULTZ (1942) Seems to occur mainly in Sierra Leone. and CHAYTOR and WILLIAMS (1966). Epiplafys sexfasciafus leonensis Ahl, 1937 see CICHLIDAE DAGET and ILTIS (1965). - Anomalochromis fhomasi (Boulenger, 1915) Epiplafys dorsal& Mayer, 1936 see BERKENKAMP Parafilapia fhomasi Boulenger, 1915. and ETZEL (1978). Pelmafochromis fhomasi (Boulenger, 1915). Epiplafys maflocki Fowler, 1950 see SCHEEL (1968). Hemichromis fhomasi (Boulenger, 1915). Epiplafiys zimiensis Berkenkamp, 1977 see BOHM - Chromidofilapia gunfheri (Sauvage, 1882) (1979). Hemichromis gunfheri Sauvage, 1882. Epiplafys senegalensis (non Steindachner) in LAM- Pelmafochromis gunfheri (Sauvage, 1882). BERT (1958). Epiplafys fasciolafus fofofaensis Romand, 1978. - Hemichromis bimaculafus Gill, 1862 Epiplafys fasciolofus huwaldi Berkenkamp and Hemichromis fugaa: Payne and Trewavas, 1976 see ETZEL, 1978 see BERKENKAMP and ETZEL(1979). LOISELLE (1979). This species is polymorphie as shown by several Hemichromis paynei Loiselle, 1979. subsperies. - Hemichromis fasciafus Peters, 1857 - Epiplafys hildegardae Berkenkamp, 1983 - Pelmafochromis bueffikoferi (Steindachner, 1895) Known only from the Nzerékoré region, but. may Parafilapia biiffikoferi Steindachner, 1895. be present in Liberia. - Pelvicachromis humilis (Boulenger, 1916) - Epiplatys josinnae Berkenkamp and Et.zel, 1983 Pelmafochromis humilis Boulenger, 1916. Known only from t.he t.ype localit.ies around - Pelvicachromis roloffi (Thys van den Audenaerde, Kenenia in Sierra Leone. 1968) - Epiplafys lamoffei Daget, 1954 Pelmafochromis roloffi Thys van den Audenaerde, Epiplafys fasciolafus lamoffei Daget, 1954. 1968. Present- in nort-hern Liberia. Pelmafochromis pulcher (non Boulenger) in BOU- - Epiplafys njalaensis Neumann, 1976 LENGER (1916) and DAGET (1950; 1962). Aplocheilus njalaensis (Neumann, 1976) in RADDA Pelmafochromis bueffikoferi (non Steindachner) in (1976). FOWLER (1950). Known only from the type localit,y around Njala - Sarofherodon caudomarginafus (Boulenger, 1916) in Sierra Leone. Tilapia caudomarqinafa Boulenger, 1916. - Epiplafys olbrechfsi Poll, 1941 - Sarofherodon galilaeus (Linnaeus, 1758) Epiplafys fasciolafus olbrechfsi (Poll, 1941) in Tilapia galilaea (Linnaeus, 1758). DAGET (1952 and 1963). - Sarofherodon melanofhwon leonensis (Thys van Epiplafys fasciolafus (non Giinther) in DAGET and den Audenaerde, 1971) TLTIS (1965). Tilapia leonensis Thys van den Audenaerde, 1971 Epiplafys fasciolafus puefzi Berkenkamp and see TREWAVAS (1983). Etzel, 1985. This subspecies occurs in fresh and brackish This species is polymorphie as shown by several wat,ers along the toast. subspecies present in Côte-d’Ivoire. Tilapia macrocephalu (parfim ? non Günther, - Epiplafys roloffi Romand, 1978 1862) in BOULENGER (1916) see TREWAVAS Epiplafys olbrechfsi (non Poll) in ROLOFF (1976). (1983). Restricted to t,he nort.hern regions of Liberia. It. is possible t,hat specimens ident,ified T. heudelofi - Epiplafys ruhkopfi Berkenkamp and Etzel, 1980 see AHL (1937) belong to S. melanofheron leonensis. Only known from the type locality in central - Sarofherodon occidenfalis (Daget, 1962) Liberia. Tilapia occidenfalis Daget, 1962. ? Chromis mossambicus (non Peters) in STEIN- CHANNIDAE DACHNER (1895) (St. Paul river and Soforeh - Parachanna obscura (Günther, 1861) Place, Liberia) see TREWAVAS (1983). Ophiocephalus obscurus Günther, 1861 in BOULEN- Tilapia galilea (parfim, non Linnaeus) in FOWLER GER (1919) and DAGET (1950). (1919) (Mt, Coffee, St. Paul, Liberia see Taxonomy and distribution of the genus Para- TREWAVAS (1983). charma have been discussed by BONOU and TEUGELS Tilapia pleuromelas (non Duméril) in SCHULTZ ( 1985). (1942) see TREWAVAS (1983).

Rw. Hydrubiol. trop. 23 (4) : 329-350 (1990). FRESHWATER FISHES OF SIERRA LEONE AND LIBERIA 343

? Chromis niloticus (non Linnaeus) in STEIN- Gobius aeneofuscus var. guineensis Peters, 1877. DACHNER (1895) see THYS VAN DEN AUDEN- Gobius guineensis Peters, 1877 in BOULENGER AERDE (1968). (1919). - Sarotherodon tournieri (Daget, 1964) Gobius (Chonophorus) tajasica (non Lichenstein, Tilapia tournieri Daget, 1964. 1823) in STEINDACHNER (1895). Trewavas (1983) distinguished t.wo sub-spec.ies : - Nematogobius maindroni (Sauvage, 1880) - S. tounieri tournieri (Daget, 1964) from Gobius maindroni Sauvage, 1880 in BOULENGER Cavally (Côte-d’Ivoire). (1919). - S. tournieri liberiensis (THYS VAN DEN ELEOTRIDAE AUDENAERDE, 1971) from Cess and St John rivers. - Eleotris daganensis Steindachner, 1870 Tilapia liberiensis Thys van den Audenaerde, 1971 - Eleotris senegalensis Steindachner, 1870 see TREWAVAS (1983). Eleotris (Culius) biittikoferi Steindachner, 1895. - Tilapia breoimanus Boulenger, 1911 - Eleotris oittata Duméril, 1858 Tilapia saoagei Fowler, 1919 in SCHULT~ (1942) Eleotris pisonis (non Gmelin, 1789) in STEIN- and DAGET (1963) see WHITEHEAD (1962). DACHNER (18%). - Tilapia buttikoferi (Hubrecht,, 1881) Eleotris monteiri O’Snaughnessy, 1875 in AHL Chromis buttikoferi Hubrecht, 1881. (1937). - Tilapia cessiana Thys van den Audenaerde, 1968 - Kribia kribensis (Boulenger, 1907) Close to T. buttikoferi, this species occurs in river Eleotris kribensis Boulenger, 1907 in SCHITLTZ Cess or Nipoué. (1942), DAGET (1950) and CHAYTOR and WIL- LIAMS - Tilapia coffea Thys van den Audenaerde, 1970 (1966). Described from St Paul river and close to Tilapia - Kribia leonensis (Boulenger, 1916) walteri occurring in the adjac.ent basins (St John, Eleotris leonensis Boulenger, 1916 in FOWLER Cess and Cavally). (1936) known only from Sierra Leone. - Tilapia guineensis (Bleeker, 1862) - Kribia nana (Boulenger, 1901) THYS VAN DEN AUDENAERDE (1968) considered ANABANTIDAE that Chromis mossambicus Peters, 1852 mentioned - Ctenopoma kingsleyae Giinther, 1896 by HUBRECHT (1881) and STEINDACHNER (1895) Anabas kingsleyae (Günther, 1896) in SCHULTZ could be T. guineensis at least in part. That is (1942) and FOWLER (1919). possible too for Tilapia melanopleura Duméril, 1859, Ctenopoma petherici (non Günther) in HUBRECHT in DAGET (1950). (1881) and STEINDACHNER (1895). - Tilapia joka Thys van den Audenaerde, 1969 - Tilapia louka Thys van den Audenaerde, 1969 MASTACEMBELIDAE Tilapia melanopleura Duméril, 1859 in NORMAN The spiny eels have been reviewed by TRAVERS (1932), FOWLER (1950) and SCHULTZ (1942). (in prep.). Tilapia zillii (non Gervais) in SCHULTZ (1942). - Aethiomastacembelus liberiensis (Boulenger, 1898) - Tilapia walteri Thys van den Audenaerde, 1968 Mastacembelus liberiensis Boulenger, 1898. Mastacembelus marchei (non Sauvage) in STEIN- - Tilapia zillii (Gervais, 1848) DACHNER (1895). - Tylochromis intermedius (Boulenger, 1916) Mastacembelus laticauda Ahl, 1937 see DAGET and Pelmatochromis intermedius Boulenger, 1916. ILTIS (1965). Pelmatochromis jentinki (non Steindachner) in Mastacembelus reticulatus Boulenger, 1911 see SVENSSON (1933) see STIASSNY (1989). TRAVERS (in prep.). - Tylochromis jentinki (Steindachner, 1895) - Aethiomastacembelus nigromarqinatus (Boulenger, - Tylochromis leonensis Stiassny, 1989 1898) Pelmatochromis intermedius (txorz Boulenger) par- - Mastacembelus nigromarginatus Boulenger, tim in BOULENGER (1916; 1919) sec STIASSNY 1898. This species replaces A. liberiensis east- (1989). wards of t,he Cess river to the Cross. They are sympatric in Cess and Cavally systems. GOBIIDAE - Caecomastacembelus sp. Travers (in prep.) - Chonophorus lateristriga (Duméril, 1861) The genus Caecomastacembelus widespread in Gobius lateristriga Duméril, 1861. eastern and central Africa is represented in Upper

R~U. Hydrobiol. trop. 23 (4) : 329-350 (IyM). 344 D. PAuGY, C. LÉVÈQUE, G. G. TEUGELS, R. BIGORNE, R. RORIANL)

Guinea only by this species presently being described Comparing our list of species to that of the Niger from Sierra Leone. basin (LÉVEQUE et al., in prep.) whose Upper reaches are geographically c.lose to some of the coastal basins, only few species are found in common. The most abundant ones are : Mormyrops anguilloides, odoe, Brycinus macrolepidolus, Brycinus nurse, Hydrocynus forskalii, Chrysichihys nigrodigila- tus, Mulapterurus electricus, Schilbe niloticus, Auche- Thia pape’ is an up-dat,ed review of our knowledge noglanis occidentalis, Barbus macrops, Hemichromis 011 freshwater fishes from main river systems in bimaculatus and Tilapia zillii. Sierra Leone and Liberia, for many of them, the Concerning species richness, and using the simple upper course is located in Guinea. It forms part of a relationships established by PIAGET and ILTIS (1965) serirs on regional approaches for West Africa, and and by HUGUENY (1989a) where species richness follows papers on Côte-d’Ivoire and western Ghana depends only on the catchment surface area, we (TEUGELS pi al., 1988), Guinea (LÉvÊQ~E et al., 1989) oft,en find that) the predicted number of species is and Togo (PAIJGY and BÉNECH, 1989). A general lower t.han the observed one (tab. I), especially for synthesis on faunistic relationships between West Sierra Leone basins from which more samples are African river basins will be prepared using these available. TO obtain a bett.er predictive mode1 we revirws. Meanwhile, some general c.omments are have t.o introduce the mean annual discharge, as given hcKn. demonstrat,ed by HUGIJENY (1989a). Unfortunatly, i\ccording to ROBERT~ (1975), rivers of Sierra for t.his area these data are unavailable for t.he Leone and Liberia are populated almost exclusively moment. Nevertheless, as a11 the rivers are peren- hy upper guinean fishes, and the distribution of some nial, i.e. with a relative high mean annual discharge, taxa indirates “early faunistic relationships between it might well be that these refuge biotopes selzscz upper guinean, lower guinean and zaïrean provin- HUGUENY (1989b) have a higher specific richness ~5”. Without, discussing how old these relationships than nilo-sudan basins. are, this stat,ement cari be illustrated by some examples : - some species are only recorded from Upper, ACKNOWLEDGEMENTS lower guinean and zaïrean provinces : Mormyrus The authors gratefully acknowledge the staff of the fish fupirus, lsichthtys henryi, and Brienomyrus brachyis- sections in t.he Mus&um national d’histoire naturelle (Paris), fius () and Notopterus afer and Xenomys- the Musée royal de l’Afrique centrale (Tervuren) and the tus nigri (Notopt.eridae) ; British Museum (Nat.ural Histov) (London) for granting - some genera recorded from Upper Guinea are facilities to work on their collections. This paper forms part of apparently alsa represented in lower Guinea and the PEDALO programme(Poisson d’eau douce de l’Afrique de Zaïre. That; is t.he case for Doumea, Paramphilius, l’ouest). A mission was carried out in Sierra Leone (March Microsynodontis and the related genus Mockochiella, 1989) with the financinl support, of the Onchocerciasis Control Pnrailia, lchfhyborus (1. quadrilineatus is close to I. Programme (World Health Organizat.ion). ornafa from Zaïre and I. monodi from Cameroon) and Caecomastacembelus. Manuscrit accepté par le Comité de rédaction le 20 aoùf 1990.

REFERENCES

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Lepfocypris et Raiomas (Pisces, Cyprinidae) de l’Afrique NICHOLS (J. T.) and LA MONTE (F. R.), 1933. - A new catfish, de l’ouest. Reo. Hydrobiol. trop., 16 (4) : 373-393. Amphiliczs picfus, and a discussion of a small Liberian L&?~UE (C.) and BIGORNE (R.), 1985a. - Le genre Hippopo- collection of fishes, Am. Mus. Nooit., 628 : l-3. famyrus (Pisces, Mormyridae) en Afrique de l’ouest, avec la description d’Hippopofamyrus paugyi, n. sp. NEUMANN (W.), 1976. - Ein neuer Epiplnfys aus Sierra Leone, Epiplafys njczlaensis spec. nov. .4quar. u. Terrar., 23 (1) : Cybium, 9 (2) : 175-192. 4-7. LÉVÊQUE (C.) and BIGORNE (R.). 1985b. - Répartit,ion et. NORMAN (J. R.), 1932. - A collect.ion of fishes from Sierra variabilité des caractères méristiques et métriques des Leone. Ann. z%Jag.naf. Hist., (10) 10 : 180-185. espèces du genre Mormyrus (Pisces, Mormyridae) en Afrique de l’Ouest, Cybium, 9 (4) : 325-340. PARENT~ (L. R.), 1981. - A phylogenet.ic and biographie LÉV&QUE (C.) and BIGORNE (R.), 1987. - Caractères morpho- analysis of Cyprinodontiforms fishes (Teleostei, Atheri- logiques et distribut.ion de Ichthyborus quadrilineafus nimorpha). Bull. dm. Mus. Nnf. Hist., 168 (4) : 335-557. (Pellegrin, 1904) et. Phago loricafus Günt,her, 1865 (Pisces, Distichodontidae) en Afrique de l’Ouest. Reo. PAUGY (D.), 1982a. - Mise en synonymie d’Alestes chaperi Hydrobiol. frop., 20 (1) : 49-56. Sauvage, 1882 avec A. longipinnis (Günther, 1864) (Pisces, Characidae). Cybium, 6 (3) : 75-90. LÉVÈQUE (C.) and GUÉGAN (J.-F.), 1990. - Les grands Barbus (Teleost.ei, Cyprinidae) d’Afrique de l’Ouest, révision PAUGY (D.), 198213. - Synonymie d’A/estes rzztilus Blgr, 1916 systématique et parasitofaune branchiale. Reu. Hydro- avec A. mczcrolepidofus (Val., 1849). Biologie et variabi- biol. trop., 23 (1) : 41-65. lité morphologique. Reu. ZOO~. afr.. 96 (2) : 286-328. LÉV~QUE (C.) and HERBINET (P.), 1982. - Caractères mérisi- PAUGY (D.), 1986. - Révision systématique des Alesfes et ques et biologie d’Eufropius mentalis dans les rivières de Brycinus africains (Pisces, Characidae). Études et Thèses, Côt.e-d’ivoire (Pisces, Schilbeidae). Reu. ZOO~. afr., 96 ORSTOM, Paris : 295 pp. (2) : 366-392. PAUGY (D.), 1990. - Note à propos des Petersiini (Teleostei, LDVÈQUE (C.) and PAUGY (D.), 1982. - Nouvelle espèce Characidae) d’Afrique occident.aIe. Ichth. Ercplor. Fresh- de Barbus (Pisces, Cyprinidae) d’Afrique de l’ouest. zzxzfers, 1 (1) : 75-84. Cybium, 6 (1) : 81-84. PAUGY (D.) and BÉNECH (V.). 1989. - Les Poissons d’eau L~~VÈQUE (C.), PAUGY (D.) and TEUGELS (G. G.). - Annotated douce des bassins cotiers du Togo. REII. Hydrobiol. frop., checklist of the freshwater fishes of the Nilo-Sudan 22 (4) : 295-316. river basins in Africa. Rev. Hydrobiol. frop. : In press. PAUGY (D.) and GUÉGAN (J.-F.), 1989. - Not,e à propos de LÉVÊQUE (C.), PAUGY (D.), TEUGELS (G. G.) and ROMAND (R.), trois espèces d’Hydrocynus (Pisces, Characidae) du 1989. - Inventaire taxinomique et distribution des bassin du Niger suivie de la réhabilitation de l’espèce Poissons d’eau douce des bassins c0tiers de Guinée et de Hydrocynns rritfafus (Castelnau, 1861). Reu. Hydrobiol. Guinée Bissa”. Reo. Hydrobiol. frop., 22 (2) : 107-127. trop., 22 (1) : G3-69.

Reo. Hydrobiol. trop. 23 (4) : 329-350 (1999). 318 D. PAUGY, C. LkVÈQIJE, G. G. TEIJGELS, R. BIGORNE, R. ROMAN»

PIYNE (iz. 1.) anri Mc C:ARTON (B.), 1983. - Assessment. of t.he ROMAND (R.), 1978h. - A new Epiptatys from northern fishrry pot.ent.ial of t.he Bumbuna falls hydroelect.ric Liberia. Reu. ZOO~. afr.. 92 (4) : 976-984. project. Report : 17 p. mulfigr. ROMAND (R.), 1979. - Vorlaufige Beschreibung von Rotoffia PAYNE (A. 1.) and TREWAVAS (E.), 1976. - A new species of schmiffi spec. nov., einem neurn Killifisch aus Liberia. H~wichromix (Pisces, Cichlidae) of Sierra Leone and DATZ, 32 (9) : 299-300. Liberia. Bull. Br. Mus. (Nat. Hisf.) ZOO~., 30 (5) : 159. 168. ROMAND (R.), 1980. - Comments on Epiplatys lolsoensis Berkenkamp & Etzel (1978) from Sierra Leone (Pisces, PELLE(.+RIN (J.), 1921. - Poissons de Guinée francaise Cyprinodontidae). Reo. ZOO~. afr., 94 (3) : 591-599. rapport& par M. P. Chabanaud. Bull. Mus. nafn. Hisf. nat., Paris, 27 (6) : 404-405. ROMAND (R.), 1985. - Similarité génét.ique entre deux espkces d’ilphyosemion de Sierra Leone (Pisces, Cyprinodont.i- PnLL (M.), 1971. - R&vision des Synodonfis africains (famille dae). Proposition de synonymie entre ri. occidentalis Mochocidae). .Inn[s. %~US. P. ofr. Ce&., sér. in S”, Sc.i. Clausen, 1966 et A. huroaldi (Berkenkamp & Etzel, Zod., 191 : 4!17 pp. 1980). Reu. ZOO~. afr., 99 : 177-183. R~DDA (A. C.), 1976. - Die Cyprinodont.iden Fauna von ROMAND (R.), 1986. - A st,udy of Aphyosemion schmifti Sirrra Leonr. .-lquaria, 23 : 137-149. (Romand, 1979) and a survey of the Aphyosemion of Liberia (Pisces, Cyprinodontidae). ZOO~. J. Linn. Soc., Rmn (Mc G. G.), 1985. - A revision of African Speçies of 87 : 215-234. Labe(l (Pisces, Cyprinidae). Theses Zoologicae, vol. 6 : 322 pp. SCHEEL (J. J.), 1966. - Taxonomie studies of African and RISCH CL.), 1981. - Note sur la réhabilitation de Chrysichfhys Asian t.ooth-carps (Rivulinae) based on chromosome mourus (Cuvier et- Valenciennes, 1939) (Pisces, Bagri- numhers. haemoglobin patterns, some morphological dae). R~U. ZOO~. afr., 95 (2) : 409-416. traits and crossing experiment.s. Vidensk. Meddr. dan&. nafurh. Foren, 129 : 123-148. RIscH (L.). 1986. - Het genus Chrysichthus Bleeker, 1858 en aanverwante genera (Pisces, Siluriformes, Bagridae). SCHEEL (J. J.), 1968. - Rivulins of the old world. TFH Thtse de doctorat. d’État, Université Catholique de Publications, New Jersey : 480 pp. Louvain (K.U.L.) : 506 pp. SCHULTZ (L. P.), 1942. - The freshwat.er fishes of Liberia. RIScH (L.), 1987. - Description of four new Bagrid Prou. US nafn. Mus., 92 (31X?) : 301-348. from hfrica (Siluriformes : Bagridae). Cybium, 11 (1) : 21-38. SKELTON (P. H.), 1984. - A systemat,ic revision of species of the catfish genus Amphitius (Siluroidei, Amphiliidae) RIXH (L.) and THW VAN DRN AUDENAERDE (D.), 1985. - from east.ern southern Africa. Ann. Cape Prou. Mus. Nouvelle description, distribut.ion zoogéographique et. (nul. Hist.), 16 (3) : 41-71. affinités de Chrysichfhus johnelsi Daget, 1959 (Pisces. Ragridae). Cybium, 9 (3) : 243-254. SKELTON (P. H.), 1989. - Description of two new species of West African Amphiliid catfish (Siluroidei, Amphilii- ROBERT~ (T. A.). 1975. - Geographical distribution of afriçan dae). J. L. B. Smifh Insf. Zchfhyol., Spec. Publ., 18 : freshwater fishes. Zoological Journal of fhe Linnean l-12. Sociefg, 57 : 249-319. STEINDACHNER (F.), 1895. - Die Fische Liberia’s. Notes R~L~IFF (E.), 1965. - Aphyosemion berfholdi spec. nov., eine Leyden Mus., 16, 96 pp. neue Aphyosemion Art aus Sierra Leone. DATZ, 18 (12) : 362-364. YTIASSNY ($1. L. J.), 1989. - A t.axonomic revision of t.he RCILOFF (E.), 197la. - Roloffia chayfori spec. nov., Beschrei- African genus Tylochromis (Labroidei, Cichlidae) : with burlg einer neuen Roloffia Art aus Sierra Leone. DATZ, notes on the anatomy and relationships of the group. 2.4 (ii) : 182-184. Annts Mus. r. Afr. cenf., Sci. ZOO~., 258 : 161 pp.

ROLOFF (E.), 1971 b. - Roloffia brueningi spec. nov., Beschrei- SVENSSON (G. S, O.), 1933. - Fresh-water fishes from the bnng einer neuen Roloffia Art. aus Sierra Leone. DA TZ, Gambia river (British West. Africa). Re&ts of the 24 (9) : 285-287. Swedish expedition 1931. K. soenska Vefensk. Akad. Handl., 12 (3) : l-102. ROLOFF (E.), 1976. - Epiptafys njalaensis Neumann. 1976. D.4TZ, 29 (4) : 122-124. TEUGELS (G. G.), 1981. - Notes on the stat.us and synonyms ROLOFF (E.) and LADIGES (kV.), 197“. - Roloffia monrouiae of Ctarias laeuiceps C&il, 1862 (Pisces, Clariidae). Reu. spec. nov., Beschreihung einer neuen Roloffia Art aus Zool. afr., 95 (2) : 359-370, Liberia. DATZ, 25 (9) : 299-301. TEUGELS (G. G.), 1982. - A systematic outtine of the African ROMAND (F<.), 1978a. - Description d’un nouveau Cyprino- species of the genus Clarias (Pisces, Clariidae), with an dontidae du Liheria, Epiplafys fasciolafus fofofaensis n. annotated bibliography. Annls Mus. r. Afr. Cenfr., 236 : ssp. Cybium, 3 (4) : 13-50. 249 pp.

Rw. Elydrobiol. trop. 23 (4) : 329-350 (1900). FRESHWATER FISHES OF SIERRA LEONE AND LIBERIA 349

TEUGELS (G. G.), 1986. -A systemat,ic revision of the African TRAVERS (R. A.), 1984b - A review of t.he Mastacembeloidei, species of t,he genus Cfarias (Pisces, Clariidae). An& a sub-order of synbranchiform teleost fishes. Part, II : Mus. P. rlfr. Cenfr., 247 : 199 pp. Phylogenet.ic analyses. Bull. Brif. Mus. (Naf. Hisf. Zoo[.), 47 : 85-150. TEUMIS (G. G.), DENAYER (B.) and LEGENDRE (hl.). - A systematic revision of the African catfish genus Hefero- TRAVERS (R. A.). - A t.axonomic revision of t.he African branchus (Pisces, Clariidae). ZOO~. Journ. Linn. Soc. : mastacembelid spiny eel genus Caecomasfacembelus (in press.). Poll, 1958 (Mastacembelidae ; Mastacembeloidei ; Syn- TEUGELS(G. G.), LF.~ÈQIJE(C.), PAUGY (D.)and TRAORO (K.), branchiformes) with the descrition of two new species : 1988. - Etat des connaissances sur la faune icht,yologi- (in prep.). que des bassins côtiers de Côte-d’Ivoire et de l’Ouest du Ghana. R~U. Hydrobiol. trop., 21 (3) : 221-237. TRAVERS (R. A.). - A taxanomic revision of t.he new African mastacembelid spiny eel genus Aethiomasfacembelus THYS VAN DEN AUDENAERDE (D. F. E.), 1968a. - Description gen. nov. (Mastacembelidae; Mast,acembeloidei ; Sy- of a new Pelmafochromis (Pisces, Cichlidae) from Sierra branchiformes) with the description of four new spe- Leone. Reu. ZOO~. Bof. afr., 77 (3-4) : 335-345. cies : (in prep.). THYS VAN DEN AUDENAERDE (D. F. E.), 1968b. - A TREWAVAS (E.), 1974. - The freshwat.er fishes of Rivers preliminary cont.ribution to a systematic revision of the Mungo and hIerne and Lakes Kot.to. Mboandong and genus Pelmafochromis Hubrecht sensu lafo (Pisces, Soden, west Cameroon. Bull. Br. Mus. naf. Hisf. (ZOO~.), Cichlidae). Reu. ZOO~. Bof. afr., 77 (3-4) : 349-391. 26 (5) : 331-419. THYS VAN DEN AUDENAERDE (D. F. E.), 1968c. - Description of Tilapia cessiana sp. nov. with some remarks on TREWAVAS (E.), 1983. - Tilapiine fishes of the genera Tilapia (Heferofilapia) buffikoferi (Hubrecht, 1881) Sarofherodon, Oreochromis and Danakilia. Brifish Mu- (Pisces, Cichlidae). Reo. ZOO~. Bot. afr., 78 (l-2) : 183- seum (Nat. Hisf.), London : 583 pp. 196. VAN DEN NUXJWENHUIZEN(A.), 19X?.- Wer das Kleine Ri&t, THYS VAN nEN AUDENAERDE (D. F. E.), 1968d. - Description ehrt, ist das Grosse nicht wert. BATZ, 25 (6) : 181-185. de Tilapia walferi sp. nov. (Pisces, Cichlidae) de la rivière Cavally (Afrique Occidentale). Reu. ZOO~. Bof. VANDERSMISSEN (J. P.), 1977a. - Roloffia melanfereon (Fowler, afr., 78 (3-4) : 374-379. 1950). Dist.ribution - Ecologie - Essais de redescrip- THYS VAN nEN AUDENAERDE (D. F. E.), 1969a. - An tion. Association Killiphile Francophone Belge, Killi annotated bibliography of Tilapia (Pisces, Cichlidae). Contact, suppl. : 9 pp. MRAC Tervuren (DO~. ZOO~.), 14 : 450 pp. VANDERSMISSEN (J. P.), 1977b. - Elevage de Rolofffa THYS VAN DEN AUDENAERDE (D. F. E.), 1969b. - Description melanfereon. Association Killiphile Francophone Belge, of Tilapia louka sp. nov. from Sierra Leone, and some Killi Confarf, 5 (6) : 93. remarks on Tilapia rheophila Daget, 1962 (Pisces, Cichlidae). Reu. ZOO~. Bof. afr., 79 (l-2) : 82-96. VAN~ERSMISSEN(J.P.),ET~EL(V.)~~~ BERKENKAMP (H.O.), THYS VAN DEN AUDENAERDE (D. F. E.), 1969c. - Description 1980. - Description de Rolofffa fredrodi spec. nov., un of a small new Tilapia (Pisces, Cichlidae) from Sierra nouveau Cgprinodonfidae de Sierra Leone (Pisces, Leone. Retr. ZOO~. Bof. afr., 80 (l-2) : 157-165. Cyprinodontidae). Association Killiphile Francophone Belge, Killi Confacf separate. Dec. : 20 pp. THYS VAN nEN AUDENAERDE (D. F. E.), 1969d. - Description of a new genus and species of Clupeoid fish from Sierra WHITEHEAD (P. J. P.), 1962. - The life history and breeding Leone. Reu. ZOO~. Bof. afr., 80 (3-4) : 385-390. habits of the African fish Tilapia mariae and t,he THYS VAN DEN AUDENAERDE (D. F. E.), 1970. - Description status of T. meeki. Proc. ZOO~. Soc. Lond., 139 (4) : 535- of a new Tilapia (Pisces, Cichlidae) from St.. Paul River, 543. Liberia. Refr. ZOO~. Bof. afr., 81 (l-2) : 133-140. WHITEHEAD (P. J. P.), 1986. - FAO Species Catalogue. 7. THYS VAN DEN AunENAERnE (D. F. E.), 1974. - Descript.ion Clupoid fishes of the world. An annoted and illustrated d’une nouvelle espéce d’Alesfes de la rivière Cess (Cote- catalogue of the herrings. sardines, pilchards, spram, d’ivoire et. Liberia) (Pisces, Characidae). Reu. ZOO~. afr., shards, anchovies and wolf-herring. Part 1 - Chirop- 88 (1) : 143-147. centridae. Clupeidae and Pristigasteriade. FAO Fish. TRAVERS (R. A.), 1984a. - A review of t.he Mastacembeloidei, Sgnop., 125, 7 (1) : 303 pp. a sub-order of synbranchiform t,eleost fishes. Part 1 : Anatomical descriptions. Bull. Brif. Mus. naf. Hisf. WILDEKAMP (R. H.), 1981. - Killi-Vissen. Zuidgroep B. V. (ZOO~.), 46 : 1-133. Best. : 192 pp.

Reo. Hydrobiol. frop. 23 (4) : 329-350 (1990). 350 D. I’AUGY, C. LÉVÊQUE, G. G. TEUGELS, R. BIGORNE. R. ROMAND

WILDEKAYP (R. H.), HOMANU (R.) and SCHEEL (J. J.), 1986. - WRIGHT (R. C.), 1982. - Seasonal variat.ions in water quality Cyprinodontidae : 165-276. In CLOFFA 2 - Check list. of a West. African river (River Jong in Sierra Leone). of the freshwater fishes of Africa. Vol. 2, Daget. (J.), Reu. Hydrohiol. trop., 15 (3) : 193-199. C;osse (J.-P.) and Thys van den Audenaerde (6. F. E.) eds, ISBN, MRAC, ORSTOM : 520 pp. WRIGHT (R. C.), 1985. - The seasonality of wat.er quality in the drainage basin of a trouical river (R. *Jone in Sierra WILSON (M. J.) and LOISELI.E (P. V.), 1980. - Hemichromis Leone). R;I. Hydrohiol. trip.. 18 (3) :’ 177-181. fhomasi (Boulenger, 1915). Cichlid index 4 (5) : 1-2. In Buntharsche Bulletin (J. Amer. Cichlid Assn.) no 78.

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