CARAN Carang 17 1983 FAO SPECIES IDENTIFICATION
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click for previous page CARAN Carang 17 1983 FAO SPECIES IDENTIFICATION SHEETS FAMILY: CARANGIDAE FISHING AREA 51 (W. Indian Ocean) Carangoides uii Wakiya, 1924 OTHER SCIENTIFIC NAMES STILL IN USE: ? Citula diversa Whitley, 1940 VERNACULAR NAMES: FAO : En - Onion trevally Fr - Carangue oignon Sp - Jurel cebollita NATIONAL: DISTINCTIVE CHARACTERS: Body strongly compressed, almost ovate; dorsal profile of body more strongly convex than ventral profile, nape moderately curved. Eye diameter slightly smaller than snout lenyth; both jaws with bands of villiform teeth, the bands widest anteriorly; vomerine tooth patch ovate, without a posteromedian extension; gillrakers (including rudiments) 6 or 7 upper, 16 to 18 lower and 22 to 25 total on first gill arch. Two separate dorsal fins, the first with 8 spines, the second with 1 spine and 21 to 23 usually 22 or 23 soft rays; anal fin with 2 detached spines followed by 1 spine and 18 or 19 soft rays; lobe of second dorsal fin elongate, in largest adults may exceed length of second dorsal fin base. (In specimens larger than 10 cm fork length, height of second dorsal fin lobe longer than head length, and distinctly longer than anal fin lobe.) Lateral line anteriorly with a moderate regular arch, with junction of curved and straight parts below second dorsal fin between 12th to 14th soft rays; chord of curved part of lateral line longer than straight part of lateral line, contained 0.6 to 0.8 times in straight part; straight part of lateral line with 16 to 26 weak scutes, and 34 to 43 total elements (including anterior scales). Breast naked ventrally to behind origin of pelvic fins; laterally, naked area of breast extends diagonally to naked base of pectoral fin. Vertebrae 10+14. Colour: in life, bluish-grey above, silvery below; opercle spot indistinct. Spinous dorsal fin and lobe and margins of second dorsal fin dark; anal fin spotted with yellow and tipped with white. Pelvic fins and caudal fin yellowish, the latter with dusky edges, pectoral fins pale. DISTINGUISHING CHARACTERS OF SIMILAR SPECIES OCCURRING IN THE AREA: Carangoides caeruleopinnatus: in specimens larger than 10 cm fork length, height of second dorsal fin lobe usually shorter than head length, and slightly to distinctly shorter than anal fin lobe. C. malabaricus and C. talamparoides: small area naked of scales anteriorly just above pectoral fin base (completely scaled in C. uii); and more gillrakers on lower limb of first arch, 21 to 27 (C. malabaricus) or 19 to 22 (C. talamparoides) (versus 16 to 18 in C. uii . C. chrysophrys: profile of snout gently sloped, then abruptly vertical just above mouth cleft; and usually fewer soft dorsal fin rays, 18 to 20 (21 to 23, usually 22 or C. caeruleopinnatus 23 in C. uii). C. hedlandensis: eye diameter about equal to or larger than snout length; adults with interorbital "bump"; and in mature males, central rays of dorsal and anal fins elongate. C. armatus: more lower limb gillrakers on first arch, 20 to 24, total 31 to 37 (versus 16 to 18 and 22 to 25, respectively). bump C. malabaricus C. uii C. chrysophrys C. hedIandensis SIZE: Maximum: Largest specimen examined 21 cm fork length, 24.5 cm total length. Remarks: few adult specimens are available in collections suggesting that this species may be relatively uncommon and perhaps does not attain a large size. GEOGRAPHICAL DISTRIBUTION AND BEHAVIOUR: In the Western Indian Ocean known only from Durban (South Africa) and Sri Lanka. Also known from Thailand, Okinawa, Japan, the Philippines and and Australia (if C. diversa is conspecific). Inhabits coastal waters. PRESENT FISHING GROUNDS: Coastal waters throughout its range. CATCHES, FISHING GEAR AND FORMS OF UTILIZATION: Separate statistics are not reported for this species. Caught on hook and line, with bottom trawls and several types of artisanal gear. Marketed fresh and dried salted. CARAN Caranx 1 1983 FAO SPECIES IDENTIFICATION SHEETS FAMILY : CARANGIDAE FISHING AREA 51 (W. Indian Ocean) Caranx ignobilis (Forsskål, 1775) OTHER SCIENTIFIC NAMES STILL IN USE: None VERNACULAR NAMES: FAO : En - Giant trevally Fr - Carangue têtue Sp - Jurel gigante NATIONAL: patch of prepelvic DISTINCTIVE CHARACTERS: scales Body oblong, compressed; dorsal profile strongly naked convex to second dorsal fin, ventral profile only slightly area convex. Adipose eyelid moderately developed, small anteriorly, posterior eyelid extends onto eye to rear border of pupil; end of upper jaw extends to posterior edge of pupil or a little beyond; upper jaw with outer row of strong canines widely spaced in adults, and an inner band of small villiform teeth, widest at symphysis; lower jaw with a single row of strong conical teeth widely common less common rare spaced in adults; gillrakers (including rudiments) 5 to 7 upper, 15 to 17 lower and 20 to 24 total on first gill arch underside of head Two separate dorsal fins, the first with 8 spines, the types of scalation patterns on breast second with 1 spine and 18 to 21 soft rays; anal fin with 2 detatched spines followed by 1 spine and 15 to 17 soft rays; total soft dorsal and anal fin rays 34 to 38; dorsal-fin lobe contained 4.4 to 6.2 times in fork length in specimens larger than 15 cm fork length. Straight part of lateral line with 0 to 4 anterior scales followed by 26 to 38 strong scutes. Breast naked ventrally, typically with a small patch of prepelvic scales. Vertebrae 10+14. Colour: in life, adults with head and body silvery grey to black above, usually paler below; fins usually uniformly pigmented grey to black, except leading edge and tips of dorsal and anal fin lobes paler. No dark spot at upper end of opercle. Mature males usually darker than females, sometimes head and fins completely black. Juveniles and young adults generally with more silvery bodies and paler fins; those inhabiting turbid coastal waters often with yellow fins, the anal fin usually brightest. DISTINGUISHING CHARACTERS OF SIMILAR SPECIES OCCURRING IN THE AREA: Caranx sem: total gillrakers (including rudiments) on first arch 24 to 27, usually 25 or 26 (20 to 24, rarely 24 in C. ignobilis); general body colour bronze to yellow-green (versus silvery to black); and upper lobe of caudal fin frequently with distal half noticeably dark or black, especially in juveniles. C. lugubris: breast completely scaled; and total gillrakers (including rudiments) on first arch 23 to 30, usually 26 to 28 versus 20 to 24, rarely 24). C. papuensis: total gillrakers (including rudiments) on first arch 26 to 30 (20 to 24, rarely 24 in C. ignobilis); general body colour bronze to yellow-green versus silvery to black); and posterior margin of lower caudal-fin lobe with a distinct narrow white border. C. melampygus: breast completely scaled; total gillrakers (including rudiments) on first arch 25 to 29, usually 26 or 27 (20 to 24, rarely 24 in C. ignobilis); and in life, adults with median fins electric blue. C. sexfasciatus and C. tille: breast completely scaled; and upper end of opercle usually with a black spot. Other species of Carangidae: lack strong scutes in the straight part of lateral line or dentition not consisting of upper jaw with an outer series of moderate to strong canines and an inner band of fine teeth, and lower jaw with a single row of teeth. SIZE: Maximum: verified size 146 cm fork length, 165 cm total length and 52.6 kg; common to about 80 cm fork length. GEOGRAPHICAL DISTRIBUTION AND BEHAVIOUR: Broadly distributed throughout most of the Indian Ocean and Central Pacific, eastward to the Hawaiian and Marquesas Islands. Abundant in all marine habitats; juveniles often encoun- tered in estuaries. Feeds primarily on fish. PRESENT FISHING GROUNDS: Coastal waters throughout its range. An excellent sports fish. CATCHES, FISHING GEAR AND FORMS OF UTILIZATION: Separate statistics are not reported for this species. Caught primarily on hook and line and by spearing; also with gillnets and other artisanal gear. Marketed mostly fresh; also dried salted. CARAN Caranx 2 1983 FAO SPECIES IDENTIFICATION SHEETS FAMILY: CARANGIDAE FISHING AREA 51 (W. Indian Ocean) Caranx melampygus Cuvier, 1833 OTHER SCIENTIFIC NAMES STILL IN USE: Caranx stellatus Eydoux & Souleyet, 1841 Caranx medusicola Jordan & Starks, 1895 VERNACULAR NAMES: FAO : En - Bluefin trevally Fr - Carangue aile bleue Sp - Jurel de aleta azul NATIONAL: DISTINCTIVE CHARACTERS: Body oblong, compressed; dorsal profile moderately convex to second dorsal fin, ventral profile only slightly convex. Adipose eyelid weakly developed, small anteriorly, posterior eyelid extends onto eye to rear border of pupil in large adults; end of upper jaw extends to below anterior margin of eye; upper jaw with outer row of strong canines widely spaced in adults, and an inner band of small villiform teeth, widest at symphysis; lower jaw with a single row of strong conical teeth widely spaced in adults; gillrakers (including rudiments) 5 to 9 upper, 17 to 21 lower and 25 to 29 (usually 26 or 27) total on first gill arch. Two separate dorsal fins, the first with 8 spines, the second with 1 spine and 21 to 24 soft rays; anal fin with 2 detached spines followed by 1 spine and 17 to 20 soft rays; total soft dorsal and anal fin rays 39 to 44; dorsal-fin lobe contained 4.2 to 6.7 times in fork length in specimens larger than 15 cm fork length. Straight part of lateral line with 0 to 10 anterior scales followed by 27 to 42 strong scutes. Breast completely scaled. Vertebrae 10 t 14. Colour: adults with head and dorsal half of bod brass suffused with blue and covered with small blue- black spots (forming at about 16 to 22 cm fork length and increasing in number with size); ventrally body generally silvery white.