DOCSLIB.ORG

Ichthyological Exploration of Freshwaters an International Journal for Field-Orientated Ichthyology

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Ichthyological Exploration of Freshwaters an International Journal for Field-Orientated Ichthyology Verlag Dr. Friedrich Pfeil ISSN 0936-9902 Ichthyological Exploration of Freshwaters An international journal for field-orientated ichthyology Volume 22 Number 3 Ichthyological Exploration of Freshwaters An international journal for field-orientated ichthyology Volume 22 • Number 3 • September 2011 pages 193-288, 53 figs., 10 tabs. Managing Editor Maurice Kottelat, Route de la Baroche 12, Case postale 57 CH-2952 Cornol, Switzerland Tel. + 41 32 4623175 · Fax + 41 32 4622259 · E-mail [email protected] Editorial board Pier Giorgio Bianco, Dipartimento di Zoologia, Università, Napoli, Italy Ralf Britz, Department of Zoology, The Natural History Museum, London, United Kingdom Sven O. Kullander, Naturhistoriska Riksmuseet, Stockholm, Sweden Helen K. Larson, Museum and Art Gallery of the Northern Territory, Darwin, Australia Lukas Rüber, Department of Zoology, The Natural History Museum, London, United Kingdom Ivan Sazima, Museu de Zoologia, Unicamp, Campinas, Brazil Paul H. Skelton, South African Institute for Aquatic Biodiversity, Grahamstown, South Africa Tan Heok Hui, Raffles Museum of Biodiversity Research, National University of Singapore, Singapore Ichthyological Exploration of Freshwaters is published quarterly Subscriptions should be addressed to the Publisher: Verlag Dr. Friedrich Pfeil, Wolfratshauser Str. 27, 81379 München, Germany PERSONAL SUBSCRIPTION : EURO 100 per Year/volume - 4 issues (includes surface mail shipping) INSTITUTIONAL SUBSCRIPTION : EURO 180 per Year/volume - 4 issues (includes surface mail shipping) Manuscripts should be addressed to the Managing Editor: Maurice Kottelat, Route de la Baroche 12, Case postale 57, CH -2952 Cornol, Switzerland CIP-Titelaufnahme der Deutschen Bibliothek Ichthyological exploration of freshwaters : an international journal for field-orientated ichthyology. – München : Pfeil. Erscheint jährl. viermal. – Aufnahme nach Vol. 1, No. 1 (1990) ISSN 0936-9902 Vol. 1, No. 1 (1990) – Copyright © 2011 by Verlag Dr. Friedrich Pfeil, München, Germany All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying or otherwise, without the prior permission of the copyright owner. Applications for such permission, with a statement of the purpose and extent of the reproduction, should be addressed to the Publisher, Verlag Dr. Friedrich Pfeil, Wolfratshauser Str. 27, 81379 München, Germany. Printed by Advantage Printpool, Gilching ISSN 0936-9902 Printed in the European Union Verlag Dr. Friedrich Pfeil, Wolfratshauser Str. 27, 81379 München, Germany Phone + 49 89 742827-0 · Fax + 49 89 7242772 · E-mail: [email protected] · www.pfeil-verlag.de 193 Ichthyol. Explor. Freshwaters, Vol. 22, No. 3, pp. 193-200, 5 figs., 1 tab., September 2011 © 2011 by Verlag Dr. Friedrich Pfeil, München, Germany – ISSN 0936-9902 Schistura diminuta, a new miniature loach from the Mekong River drainage of Cambodia (Teleostei: Nemacheilidae) Chouly Ou*, Carmen G. Montaña*, Kirk O. Winemiller* and Kevin W. Conway*, ** Schistura diminuta, new species, is described from the lower Sekong River, Mekong drainage, Cambodia. It is distinguished from congeners by the following characters: tiny adult body size (maximum known size 19.5 mm SL); lateral line incomplete, with 14-17 pores, terminating on the flank anterior to vertical through pelvic-fin origin; absence of axillary pelvic lobe; processus dentiformis weakly developed; dorsal-fin rays iii-iv.8.i; principal caudal-fin rays 8 + 8 (7 + 7 branched caudal-fin rays); a distinct dark brown spot at centre of caudal-fin base; and 9-10 irregular light brown bars along dorsal body surface. Introduction S. magnifluvis (middle Cambodian Mekong). In addition to these two species of Schistura, Rain- Members of the family Nemacheilidae are small, both (1996) listed four more (S. kengtungensis, benthic fishes, distributed throughout Asia, Eu- S. kohchangensis, S. laterimaculatus and S. nicholsi) rope and the Tana Lake basin of Ethiopia where as probable inhabitants of the Cambodian Me- they mainly inhabit running waters and well kong, given their presence in bordering areas of oxygenated hill streams (Kottelat, 1990). With Thailand, although presence of these latter species close to 200 valid species, the genus Schistura in Cambodia has yet to be confirmed. McClelland is currently the largest and one of the A recent ichthyological survey of the lower most widespread of all the nemacheilid genera Sekong River (one of the three major tributaries (Kottelat, pers. comm.). To date, roughly 70 spe- of the Mekong in Cambodia) in northeastern cies have been described from the Indochinese Cambodia (January, 2010) obtained five tiny region alone (Kottelat, 1990, 1998, 2000; Freyhof specimens of Schistura that differ markedly from & Serov, 2000) with two known to exist in the other species of the genus presently reported from Mekong drainage in Cambodia (Kottelat, 1990; the region. Further investigation has revealed that Rainboth, 1996), viz. S. daubentoni (northern Cam- these specimens represent a new species, which bodian Mekong, including the Sesan River) and is described herein. * Department of Wildlife and Fisheries Sciences, Texas A&M University, 210 Nagle Hall, 2258 TAMU, College Station, TX 77843, USA. ** Corresponding author. Texas Cooperative Wildlife Collection, Department of Wildlife and Fisheries Sciences, Texas A&M University, 210 Nagle Hall, 2258 TAMU, College Station, TX 77843, USA. E-mail: [email protected] Ichthyol. Explor. Freshwaters, Vol. 22, No. 3 194 Materials and methods regular light brown bars along dorsal body sur- face; absence of axillary pelvic lobe; weakly de- Measurements follow Kottelat (1990) except for veloped processus dentiformis; dorsal-fin rays head measurements, which are expressed as a iii-iv.8.i; principal caudal-fin rays 8 + 8 (7 + 7 percentage of lateral head length (HL). Counts branched caudal-fin rays). and osteological terminology follow Conway (2011). Measurements were taken to the nearest Description. General body shape as in Figure 1. 0.1 mm on the left side of specimens using a Zeiss Morphometric and meristic characters listed in DRC stereomicroscope equipped with an ocular Table 1. A miniature species (sensu Weitzman & micrometer. Counts were obtained from the left Vari, 1988), largest specimen examined 19.1 mm side of specimens with the aid of transmitted SL (range 18.0-19.5). Body moderately elongate, light. Specimen photographs were obtained using cross-section circular to slightly compressed an- a Zeiss Stereo Discovery V20 stereomicroscope teriorly, becoming increasingly more oval poste- equipped with an axiocam MRc5. A single rior to dorsal-fin origin. Body depth greatest specimen was cleared and double stained (c&s) midway between occiput and dorsal-fin origin, following the protocol of Taylor & van Dyke (1985) decreasing slightly in depth towards caudal pe- and 4 specimens were radiographed. Only total duncle. Head moderately depressed, cheeks vertebral counts are reported for the holotype and somewhat inflated. Eye relatively large, posi- non-c&s paratype material because it was not tioned high on side of head. Mouth subterminal possible to distinguish between abdominal and and strongly arched (Fig. 2), upper and lower lips caudal vertebrae in the radiographs. Materials fleshy; lower lip with median interruption. Two examined are housed in the following collections: pairs of rostral barbels and one pair of maxillary ZRC, Raffles Museum of Biodiversity Research, barbels present. Inner rostral barbel reaching National University of Singapore, Singapore; slightly past base of outer rostral barbel when TCWC, Texas Cooperative Wildlife Collection, extended; outer rostral barbel reaching slightly Texas A&M University, College Station; IFReDI, past base of maxillary barbel when extended; Fish collection of the Inland Fisheries Research maxillary barbel reaching to or slightly past and Development Institute, Phnom Penh. horizontal through center of eye when extended. Rostral cap poorly developed, not extended as a fleshy flap between base of rostral barbels. Deep Schistura diminuta, new species groove present between upper lip and rostral cap. (Fig. 1) Upper and lower jaws with a sharp horny sheath, processus dentiformis poorly developed. Ante- Holotype. ZRC 53105, female, 18.1 mm SL; Cam- rior nostil situated at tip of a short tube, poste- bodia: Stung Treng province: Mekong River rior edge of opening bordered by a triangular drainage, lower Sekong River in Siem Pang dis- flap; posterior nostril larger than anterior nostril, trict, 14°07'11.88" N 106°23'11.36" E; C. Ou, C. G. situated between base of tube surrounding ante- Montaña, K. O. Winemiller & S. Putrea, 18 Janu- rior nostril and anterior margin of orbit. ary 2010. Dorsal fin with iii.8.i (3) or iv.8.i (1) rays. Anal fin with ii.5.i rays. Principal caudal rays 8 + 8, Paratypes. TCWC 14766.01, 2 (1 c&s), 18.1- branched caudal fin rays 7 + 7. Dorsal procurrent 19.0 mm SL; ZRC 53106, 1, 19.1 mm SL; IFReDI rays 8 (1), 10 (2) or 11 (1), ventral procurrent rays uncatalogued, 1, 19.5 mm SL; same locality as 4 (3) or 5 (1). Pelvic fin with i.5.i rays, pectoral fin holotype. with i.7.ii (2) or i.7.iii rays. Dorsal-fin origin situ- ated slightly posterior to vertical through pelvic- Diagnosis. A miniature species, distinguished fin insertion. Posterior margin of dorsal fin from other members of the genus by the follow- straight to slightly concave. Anal-fin origin
Load more

Recommended publications
  • Electrophorus Electricus ERSS
    Electric Eel (Electrophorus electricus) Ecological Risk Screening Summary U.S. Fish and Wildlife Service, August 2011 Revised, July 2018 Web Version, 8/21/2018 Photo: Brian Gratwicke. Licensed under CC BY-NC 3.0. Available: http://eol.org/pages/206595/overview. (July 2018). 1 Native Range and Status in the United States Native Range From Eschmeyer et al. (2018): “Distribution: Amazon and Orinoco River basins and other areas in northern Brazil: Brazil, Ecuador, Colombia, Bolivia, French Guiana, Guyana, Peru, Suriname and Venezuela.” Status in the United States This species has not been reported as introduced or established in the United States. This species is in trade in the United States. From AquaScapeOnline (2018): “Electric Eel 24” (2 feet) (Electrophorus electricus) […] Our Price: $300.00” 1 The State of Arizona has listed Electrophorus electricus as restricted live wildlife. Restricted live wildlife “means wildlife that cannot be imported, exported, or possessed without a special license or lawful exemption” (Arizona Secretary of State 2006a,b). The Florida Fish and Wildlife Conservation Commission has listed the electric eel Electrophorus electricus as a prohibited species. Prohibited nonnative species, "are considered to be dangerous to the ecology and/or the health and welfare of the people of Florida. These species are not allowed to be personally possessed or used for commercial activities” (FFWCC 2018). The State of Hawaii Plant Industry Division (2006) includes Electrophorus electricus on its list of prohibited animals. From
    [Show full text]
  • Phylogeny Classification Additional Readings Clupeomorpha and Ostariophysi
    Teleostei - AccessScience from McGraw-Hill Education http://www.accessscience.com/content/teleostei/680400 (http://www.accessscience.com/) Article by: Boschung, Herbert Department of Biological Sciences, University of Alabama, Tuscaloosa, Alabama. Gardiner, Brian Linnean Society of London, Burlington House, Piccadilly, London, United Kingdom. Publication year: 2014 DOI: http://dx.doi.org/10.1036/1097-8542.680400 (http://dx.doi.org/10.1036/1097-8542.680400) Content Morphology Euteleostei Bibliography Phylogeny Classification Additional Readings Clupeomorpha and Ostariophysi The most recent group of actinopterygians (rayfin fishes), first appearing in the Upper Triassic (Fig. 1). About 26,840 species are contained within the Teleostei, accounting for more than half of all living vertebrates and over 96% of all living fishes. Teleosts comprise 517 families, of which 69 are extinct, leaving 448 extant families; of these, about 43% have no fossil record. See also: Actinopterygii (/content/actinopterygii/009100); Osteichthyes (/content/osteichthyes/478500) Fig. 1 Cladogram showing the relationships of the extant teleosts with the other extant actinopterygians. (J. S. Nelson, Fishes of the World, 4th ed., Wiley, New York, 2006) 1 of 9 10/7/2015 1:07 PM Teleostei - AccessScience from McGraw-Hill Education http://www.accessscience.com/content/teleostei/680400 Morphology Much of the evidence for teleost monophyly (evolving from a common ancestral form) and relationships comes from the caudal skeleton and concomitant acquisition of a homocercal tail (upper and lower lobes of the caudal fin are symmetrical). This type of tail primitively results from an ontogenetic fusion of centra (bodies of vertebrae) and the possession of paired bracing bones located bilaterally along the dorsal region of the caudal skeleton, derived ontogenetically from the neural arches (uroneurals) of the ural (tail) centra.
    [Show full text]
  • Deterministic Shifts in Molecular Evolution Correlate with Convergence to Annualism in Killifishes
    bioRxiv preprint doi: https://doi.org/10.1101/2021.08.09.455723; this version posted August 10, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Deterministic shifts in molecular evolution correlate with convergence to annualism in killifishes Andrew W. Thompson1,2, Amanda C. Black3, Yu Huang4,5,6 Qiong Shi4,5 Andrew I. Furness7, Ingo, Braasch1,2, Federico G. Hoffmann3, and Guillermo Ortí6 1Department of Integrative Biology, Michigan State University, East Lansing, Michigan 48823, USA. 2Ecology, Evolution & Behavior Program, Michigan State University, East Lansing, MI, USA. 3Department of Biochemistry, Molecular Biology, Entomology, & Plant Pathology, Mississippi State University, Starkville, MS 39759, USA. 4Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Marine, Shenzhen 518083, China. 5BGI Education Center, University of Chinese Academy of Sciences, Shenzhen 518083, China. 6Department of Biological Sciences, The George Washington University, Washington, DC 20052, USA. 7Department of Biological and Marine Sciences, University of Hull, UK. Corresponding author: Andrew W. Thompson, [email protected] bioRxiv preprint doi: https://doi.org/10.1101/2021.08.09.455723; this version posted August 10, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Abstract: The repeated evolution of novel life histories correlating with ecological variables offer opportunities to test scenarios of convergence and determinism in genetic, developmental, and metabolic features. Here we leverage the diversity of aplocheiloid killifishes, a clade of teleost fishes that contains over 750 species on three continents.
    [Show full text]
  • ECOLOGY of NORTH AMERICAN FRESHWATER FISHES
    ECOLOGY of NORTH AMERICAN FRESHWATER FISHES Tables STEPHEN T. ROSS University of California Press Berkeley Los Angeles London © 2013 by The Regents of the University of California ISBN 978-0-520-24945-5 uucp-ross-book-color.indbcp-ross-book-color.indb 1 44/5/13/5/13 88:34:34 AAMM uucp-ross-book-color.indbcp-ross-book-color.indb 2 44/5/13/5/13 88:34:34 AAMM TABLE 1.1 Families Composing 95% of North American Freshwater Fish Species Ranked by the Number of Native Species Number Cumulative Family of species percent Cyprinidae 297 28 Percidae 186 45 Catostomidae 71 51 Poeciliidae 69 58 Ictaluridae 46 62 Goodeidae 45 66 Atherinopsidae 39 70 Salmonidae 38 74 Cyprinodontidae 35 77 Fundulidae 34 80 Centrarchidae 31 83 Cottidae 30 86 Petromyzontidae 21 88 Cichlidae 16 89 Clupeidae 10 90 Eleotridae 10 91 Acipenseridae 8 92 Osmeridae 6 92 Elassomatidae 6 93 Gobiidae 6 93 Amblyopsidae 6 94 Pimelodidae 6 94 Gasterosteidae 5 95 source: Compiled primarily from Mayden (1992), Nelson et al. (2004), and Miller and Norris (2005). uucp-ross-book-color.indbcp-ross-book-color.indb 3 44/5/13/5/13 88:34:34 AAMM TABLE 3.1 Biogeographic Relationships of Species from a Sample of Fishes from the Ouachita River, Arkansas, at the Confl uence with the Little Missouri River (Ross, pers. observ.) Origin/ Pre- Pleistocene Taxa distribution Source Highland Stoneroller, Campostoma spadiceum 2 Mayden 1987a; Blum et al. 2008; Cashner et al. 2010 Blacktail Shiner, Cyprinella venusta 3 Mayden 1987a Steelcolor Shiner, Cyprinella whipplei 1 Mayden 1987a Redfi n Shiner, Lythrurus umbratilis 4 Mayden 1987a Bigeye Shiner, Notropis boops 1 Wiley and Mayden 1985; Mayden 1987a Bullhead Minnow, Pimephales vigilax 4 Mayden 1987a Mountain Madtom, Noturus eleutherus 2a Mayden 1985, 1987a Creole Darter, Etheostoma collettei 2a Mayden 1985 Orangebelly Darter, Etheostoma radiosum 2a Page 1983; Mayden 1985, 1987a Speckled Darter, Etheostoma stigmaeum 3 Page 1983; Simon 1997 Redspot Darter, Etheostoma artesiae 3 Mayden 1985; Piller et al.
    [Show full text]
  • Celestial Pearl Danio", a New Genus and Species of Colourful Minute Cyprinid Fish from Myanmar (Pisces: Cypriniformes)
    THE RAFFLES BULLETIN OF ZOOLOGY 2007 55(1): 131-140 Date of Publication: 28 Feb.2007 © National University of Singapore THE "CELESTIAL PEARL DANIO", A NEW GENUS AND SPECIES OF COLOURFUL MINUTE CYPRINID FISH FROM MYANMAR (PISCES: CYPRINIFORMES) Tyson R. Roberts Research Associate, Smithsonian Tropical Research Institute Email: [email protected] ABSTRACT. - Celestichthys margaritatus, a new genus and species of Danioinae, is described from a rapidly developing locality in the Salween basin about 70-80 km northeast of Inle Lake in northern Myanmar. Males and females are strikingly colouful. It is apparently most closely related to two danioins endemic to Inle, Microrasbora rubescens and "Microrasbora" erythromicron. The latter species may be congeneric with the new species. The new genus is identified as a danioin by specializations on its lower jaw and its numerous anal fin rays. The colouration, while highly distinctive, seems also to be characteristically danioin. The danioin notch (Roberts, 1986; Fang, 2003) is reduced or absent, but the danioin mandibular flap and bony knob (defined herein) are present. The anal fin has iiiSVz-lOV: rays. In addition to its distinctive body spots and barred fins the new fish is distinguished from other species of danioins by the following combination of characters: snout and mouth extremely short; premaxillary with an elongate and very slender ascending process; mandible foreshortened; body deep, with rounded dorsal and anal fins; modal vertebral count 15+16=31; caudal fin moderately rather than deeply forked; principal caudal fin rays 9/8; scales vertically ovoid; and pharyngeal teeth conical, in three rows KEY WORDS. - Hopong; principal caudal fin rays; danioin mandibular notch, knob, and pad; captive breeding.
    [Show full text]
  • Resolving Cypriniformes Relationships Using an Anchored Enrichment Approach Carla C
    Stout et al. BMC Evolutionary Biology (2016) 16:244 DOI 10.1186/s12862-016-0819-5 RESEARCH ARTICLE Open Access Resolving Cypriniformes relationships using an anchored enrichment approach Carla C. Stout1*†, Milton Tan1†, Alan R. Lemmon2, Emily Moriarty Lemmon3 and Jonathan W. Armbruster1 Abstract Background: Cypriniformes (minnows, carps, loaches, and suckers) is the largest group of freshwater fishes in the world (~4300 described species). Despite much attention, previous attempts to elucidate relationships using molecular and morphological characters have been incongruent. In this study we present the first phylogenomic analysis using anchored hybrid enrichment for 172 taxa to represent the order (plus three out-group taxa), which is the largest dataset for the order to date (219 loci, 315,288 bp, average locus length of 1011 bp). Results: Concatenation analysis establishes a robust tree with 97 % of nodes at 100 % bootstrap support. Species tree analysis was highly congruent with the concatenation analysis with only two major differences: monophyly of Cobitoidei and placement of Danionidae. Conclusions: Most major clades obtained in prior molecular studies were validated as monophyletic, and we provide robust resolution for the relationships among these clades for the first time. These relationships can be used as a framework for addressing a variety of evolutionary questions (e.g. phylogeography, polyploidization, diversification, trait evolution, comparative genomics) for which Cypriniformes is ideally suited. Keywords: Fish, High-throughput
    [Show full text]
  • Trophic Strategy of Atlantirivulus Riograndensis (Cyprinodontiformes: Rivulidae), a Non-Annual Rivulid Threatened by Extinction, in a Perennial Environment, Brazil)
    Neotropical Ichthyology, 14(1): e150068, 2016 Journal homepage: www.scielo.br/ni DOI: 10.1590/1982-0224-20150068 Published online: 14 April 2016 (ISSN 1982-0224) Trophic strategy of Atlantirivulus riograndensis (Cyprinodontiformes: Rivulidae), a non-annual rivulid threatened by extinction, in a perennial environment, Brazil) Laísa Wociechoski Cavalheiro and Clarice Bernhardt Fialho1 Rivulidae includes non-annual fish of perennial habitats and annual fish of temporary wetlands. The objective of this research was to investigate the trophic strategy of Atlantirivulus riograndensis in a perennial environment. Sampling occurred in an environmental conservation unit in the Pampa biome, Brazil. Quantification of the diet followed the volumetric method. Consumption of autochthonous material as the main food source of the species followed the pattern of Rivulidae. Species is zooplanktonic when young. Food spectrum is broadened and insectivorousness increases with ontogeny, revealing a specialist trend in the feeding strategy of A. riograndensis. The most diverse feeding occurs in the spring and summer seasons in which the presence of larger fish was more frequent than in other seasons. The increased consumption of microcrustaceans in the fall was related to smaller individuals, captured in greater quantities in this post-reproductive period. The lowest diversity of dietary items occurs during the winter and may reflect the lower diversity of food resources available in this season or the transition from juvenile to adult diet, with consumption of autochthonous Diptera by medium sized fish. Rivulidae inclui peixes não anuais de habitats perenes e peixes anuais de alagados temporários. O objetivo desta pesquisa foi investigar a estratégia trófica de Atlantirivulus riograndensis em um ambiente perene.
    [Show full text]
  • Two New Species of Microrasbora from Thailand and Myanmar, with Two New Generic Names for Small Southeast Asian Cyprinid Fishes (Teleostei: Cyprinidae)
    J. South Asian Nat. Hist., ISSN 1022-0828. May, 1999. Vol. 4, No. 1, pp. 49-56,10 figs. © Wildlife Heritage Trust of Sri Lanka, 95 Cotta Road, Colombo 8, Sri Lanka. Two new species of Microrasbora from Thailand and Myanmar, with two new generic names for small Southeast Asian cyprinid fishes (Teleostei: Cyprinidae) Maurice Kottelat * and Kai-Erik Witte ** * Case postale 57, CH-2952 Comol, Switzerland (address for correspondence); and School of Biological Sciences, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260. Email: [email protected] ** Max-Planck-Institute for Developmental Biology, Spemannstrasse 35/III, D-72076 Tubingen, Germany. Abstract Two new species of Microrasbora are described, M. kubotai from the western (Andaman Sea) slope of Peninsular Thailand and M. nana from the lower Sittang basin in Myanmar. Microrasbora erythromicron is transferred to Danio sensu lato. Two new genera are described, Sundadanio (type species: Rasbora axelrodi) and Trigonostigma (type species: R. heteromorpha). Introduction The genus Microrasbora was created by Annandale aQuarium trade since a few years ago. The purpose (1918: 50) for two species of diminutive cyprinids of the present paper is to make names available for discovered in Inle Lake, Burma (now Myanmar), M. these two species and for two long-recognised but rubescens (the type species of the genus) (Fig. 1) and still unnamed genera of diminutive Southeast Asian M. erythromicron (Fig. 2). Annandale also tentatively cyprinids. placed in the genus two species known from the Malay Peninsula, Rasbora maculata Duncker, 1904 and Material and methods R. heteromorpha Duncker, 1904. These last two spe­ Methods for counts and measurements follow cies have never been considered as members of Kottelat & Vidthayanon (1993).
    [Show full text]
  • Atlantirivulus, a New Subgenus of the Killifish Genus Rivulus from The
    Vertebrate Zoology 58 (1) 2008 45 45 – 48 © Museum für Tierkunde Dresden, ISSN 1864-5755, 22.05.2008 Atlantirivulus, a new subgenus of the killifi sh genus Rivulus from the eastern Brazilian coastal plains (Teleostei: Cyprinodontiformes: Rivulidae) WILSON J. E. M. COSTA Laboratório de Ictiologia Geral e Aplicada, Departamento de Zoologia, Universidade Federal do Rio de Janeiro, Caixa Postal 68049, CEP 21944-970, Rio de Janeiro, RJ, Brazil wcosta(at)acd.ufrj.br Received on November 16, 2007, accepted on February 18, 2008. Published online at www.vertebrate-zoology.de on May 12, 2008. > Abstract Atlantirivulus, new subgenus of Rivulus POEY, is described to include a well defi ned, geographically isolated species assem- blage, endemic to eastern Brazil, formerly known as the Rivulus santensis species group. It includes eight species, all inhab- iting Atlantic forest habitats: R. santensis KÖHLER, the type species of the new subgenus, R. depressus COSTA, R. haraldsiolii BERKENKAMP, R. janeiroensis COSTA, R. lazzarotoi COSTA, R. luelingi SEEGERS, R. nudiventris COSTA & BRASIL, and R. simpli- cis COSTA. Atlantirivulus is diagnosed by a curved ventral process of angulo-articular and infraorbital neuromasts numerous, arranged in a zigzag pattern, morphological features that are unique among aplocheiloid fi shes. > Resumen Atlantirivulus, novo subgênero de Rivulus POEY, é descrito para incluir um agrupamento de espécies bem defi nido e isolado geografi camente, endêmico do leste do Brasil, anteriormente conhecido como grupo de espécies Rivulus santensis. Ele inclui oito espécies, todas vivendo em ambientes da Mata Atlântica: R. santensis KÖHLER, a espécie tipo do novo subgênero, R. depressus COSTA, R. haraldsiolii BERKENKAMP, R.
    [Show full text]
  • BMC Evolutionary Biology Biomed Central
    BMC Evolutionary Biology BioMed Central Research article Open Access Evolution of miniaturization and the phylogenetic position of Paedocypris, comprising the world's smallest vertebrate Lukas Rüber*1, Maurice Kottelat2, Heok Hui Tan3, Peter KL Ng3 and Ralf Britz1 Address: 1Department of Zoology, The Natural History Museum, Cromwell Road, London SW7 5BD, UK, 2Route de la Baroche 12, Case postale 57, CH-2952 Cornol, Switzerland (permanent address) and Raffles Museum of Biodiversity Research, National University of Singapore, Kent Ridge, Singapore 119260 and 3Department of Biological Sciences, National University of Singapore, Kent Ridge, Singapore 119260 Email: Lukas Rüber* - [email protected]; Maurice Kottelat - [email protected]; Heok Hui Tan - [email protected]; Peter KL Ng - [email protected]; Ralf Britz - [email protected] * Corresponding author Published: 13 March 2007 Received: 23 October 2006 Accepted: 13 March 2007 BMC Evolutionary Biology 2007, 7:38 doi:10.1186/1471-2148-7-38 This article is available from: http://www.biomedcentral.com/1471-2148/7/38 © 2007 Rüber et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: Paedocypris, a highly developmentally truncated fish from peat swamp forests in Southeast Asia, comprises the world's smallest vertebrate. Although clearly a cyprinid fish, a hypothesis about its phylogenetic position among the subfamilies of this largest teleost family, with over 2400 species, does not exist.
    [Show full text]
  • Channel Catfish Review Life-History, Distribution, Invasion Dynamics and Current Management Strategies in the Pacific Northwest
    Channel Catfish Review Life-history, distribution, invasion dynamics and current management strategies in the Pacific Northwest Thomas K Pool University of Washington Figure 1 Illustration of a channel catfish by Ted Walke (http://www.fish.state.pa.us/pafish/chancatm.jpg) Figure 2 Thomas L. Wellborn SRAC Publication No. 180 http://www.tpwd.state.tx.us/huntwild/wild/species/ccf/) Figure 3 Channel catfish: Note the barbels Figure 4 Channel catfish: Characteristic deeply forked located near the mouth© George tail © George Burgess (http://www.flmnh.ufl.edu) Burgess(http://www.flmnh.ufl.edu) All information in this report was compiled in November, 2007. Current distribution maps and background information may be outdated at this time. Diagnostic information 1a) Adipose fin a flag-like fleshy lobe, well- separated from caudal fin; tail squared, rounded, Ictalurus punctatus (Rafinesque, 1818) or forked; adults to over 24 inches Kingdom Animalia-- animals 1b) Adipose fin long, low, and 'keel-like', nearly Phylum Chordata-- chordates continuous with caudal fin; tail squared or Subphylum Vertebrata-- vertebrates rounded; adults small, never over 6 inches Superclass Osteichthyes-- bony fishes 2a) Tail deeply-forked, lobes pointed; anal fin Class Actinopterygii-- ray-finned fishes, spiny with 24 to 30 rays; bony ridge connecting skull rayed fishes and origin of dorsal fin; head relatively small Subclass Neopterygii-- neopterygians and narrow; young with small spots, larger Infraclass Teleostei adults blue-black in color without spots channel Superorder Ostariophysi catfish Ictalurus punctatus Order Siluriformes-- catfishes Family Ictaluridae Overview Genus Ictalurus Species Ictalurus punctatus Channel catfish are often grey or silver in color and can be one of the largest catfish species with a maximum size up to 915 mm and Basic identification 13 kg.
    [Show full text]
  • View/Download
    CICHLIFORMES: Cichlidae (part 6) · 1 The ETYFish Project © Christopher Scharpf and Kenneth J. Lazara COMMENTS: v. 6.0 - 18 April 2020 Order CICHLIFORMES (part 6 of 8) Family CICHLIDAE Cichlids (part 6 of 7) Subfamily Cichlinae American Cichlids (Acarichthys through Cryptoheros) Acarichthys Eigenmann 1912 Acara (=Astronotus, from acará, Tupí-Guaraní word for cichlids), original genus of A. heckelii; ichthys, fish Acarichthys heckelii (Müller & Troschel 1849) in honor of Austrian ichthyologist Johann Jakob Heckel (1790-1857), who proposed the original genus, Acara (=Astronotus) in 1840, and was the first to seriously study cichlids and revise the family Acaronia Myers 1940 -ia, belonging to: Acara (=Astronotus, from acará, Tupí-Guaraní word for cichlids), original genus of A. nassa [replacement name for Acaropsis Steindachner 1875, preoccupied by Acaropsis Moquin-Tandon 1863 in Arachnida] Acaronia nassa (Heckel 1840) wicker basket or fish trap, presumably based on its local name, Bocca de Juquia, meaning “fish trap mouth,” referring to its protractile jaws and gape-and-suck feeding strategy Acaronia vultuosa Kullander 1989 full of facial expressions or grimaces, referring to diagnostic conspicuous black markings on head Aequidens Eigenmann & Bray 1894 aequus, same or equal; dens, teeth, referring to even-sized teeth of A. tetramerus, proposed as a subgenus of Astronotus, which has enlarged anterior teeth Aequidens chimantanus Inger 1956 -anus, belonging to: Chimantá-tepui, Venezuela, where type locality (Río Abácapa, elevation 396 m) is
    [Show full text]