Main Ref. | Van den Bergh, E.C. and G.G. Teugels, 1998 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | no special organs |
Different appearance | always different morphology between mature adults |
Different colors | |
Remarks | For the males the pectoral fins usually reach the ventral-fin base, for females they do not (Ref. 27690). |
Striking features | none |
Body shape lateral | fusiform / normal |
Cross section | |
Dorsal head profile | more or less straight |
Type of eyes | more or less normal |
Type of mouth/snout | more or less normal |
Position of mouth | sub-terminal/inferior |
Type of scales | |
Diagnosis |
Diagnosis: mouth subterminal; barbels absent; lateral line incomplete with 4-6 perforated scales; 21-25 scales in lateral line; 10-12 circumpeduncular scales; 2.5-3 scales between lateral line and pelvic fin insertion; gill rakers present along lower limb of first gill arch; dorsal fin with straight posterior margin; last simple ray of dorsal fin forming unserrated spine (Ref. 27690, 81639). Description: small-sized, dorsal profile convex (Ref. 81639). Scales with divergent striae; lateral line incomplete: with 4-6 perforated scales; 21-25 scales in lateral line; 3.5-4 scales between lateral line and dorsal fin origin; 4.5-5.5 scales between lateral line and mid-belly; D:III,8; A:III,5; P:14-15; V:7-8; dorsal fin with straight border; last simple ray ossified, not serrated (Ref. 27690, 81639). Coloration: ground color silvery white, with a faint dark mid-lateral band (Ref. 27690, 81639) from above pored scales to base of caudal fin (Ref. 27690). Upper part of back olive yellow; black spot behind opercle; ventrally thin black line from anal fin to caudal fin base; dorsal, pectoral and caudal fins with red tint; specimens from turbid waters generally darker (Ref. 27690, 81639). |
Ease of Identification |
Lateral Lines | Interrupted: No |
Scales on lateral line | 21 - 25 |
Pored lateral line scales | 4 - 6 |
Scales in lateral series | |
Scale rows above lateral line | 3.5 - 4 |
Scale rows below lateral line | 4.5 - 5.5 |
Scales around caudal peduncle | 10 - 12 |
Barbels | 0 |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total | 32 - 33 |
Attributes | no striking attributes |
Fins number | 1 |
Finlets No. | Dorsal |
Ventral | |
Spines total | 1 - 1 |
Soft-rays total | 10 - 10 |
Adipose fin | absent |
Attributes | forked; more or less normal |
Fins number | |
Spines total | |
Soft-rays total | 8 - 8 |
Pectoral | Attributes more or less normal |
Spines | |
Soft-rays 14 - 15 | |
Pelvics | Attributes more or less normal |
Position abdominal beneath origin of D1 | |
Spines | |
Soft-rays 7 - 8 |