| Main Ref. | Lévêque, C., 2003 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | no special organs |
| Different appearance | males alike females |
| Different colors | different colors in juveniles and adults |
| Remarks |
| Striking features | striking type of mouth |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | clearly convex |
| Type of eyes | more or less normal |
| Type of mouth/snout | more or less normal |
| Position of mouth | sub-terminal/inferior |
| Type of scales | cycloid scales |
| Diagnosis |
Diagnosis: dorsal profile steeply arched between snout and dorsal fin; body depth 2.4-2.9x SL; depth of caudal peduncle 0.7-1.1x its length; distal margin of dorsal fin concave; 30-46 (50-150mm) and 49-56 (150-250mm) gill rakers; scale formula 5.5-6.5/38-39/6.5-7.5; 4.5 scales between lateral line and pelvic-fin base; 16 scales around caudal peduncle; 11-12 dorsal fin branched rays; known only from the Konkouré basin in Guinea (Ref. 2940, 81282). Description: snout rounded, distinctly prominent and tuberculate; inner surface of lips with transverse folds; posterior barbel well developed, about as long as eye diameter, anterior barbel absent; D:III,11-12; A:III,5; P:16-17; V:I,8 (Ref. 2940, 81282). Coloration: bluish-black in juveniles and greenish in adults, usually dark, belly lighter; fins dark (Ref. 2940, 81282). |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 38 - 39 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | 5 - 7 |
| Scale rows below lateral line | 6 - 8 |
| Scales around caudal peduncle | 16 - 16 |
| Barbels | 0 |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | 30 - 56 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 14 - 15 |
| Adipose fin | absent |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | |
| Soft-rays total | 8 - 8 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 16 - 17 | |
| Pelvics | Attributes more or less normal |
| Position abdominal behind origin of D1 | |
| Spines | |
| Soft-rays 9 - 9 |