| Main Ref. | Gosse, J.P., E.J. Coenen and G.G. Teugels, 2003 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | no special organs |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | striking type of mouth |
| Body shape lateral | elongated |
| 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 | terminal |
| Diagnosis |
Diagnosis: body depth 4.7-6.2 and head length 3.1-3.8x SL; caudal peduncle 1.5-2x longer than high; head flattened, 2.9-3.5 longer than wide; eye diameter 4-7x of head length; scale formula 12.5-14.5/90-107/13.5-14.5; single, dark, undulating longitudinal band along lateral line (not visible in live specimens); caudal-fin lobes marked with oblong black spots (Chad and Benué) (Ref. 2936, 86396). Description: pointed snout, slightly shorter than post ocular part; apart from the bicuspid teeth, there are 2 strong canines in upper and 3 in lower jaw; scales ctenoid; 10-12 scales between lateral line and pelvic-fin base (Ref. 2936, 86396). Coloration: silvery or greyish body sometimes with dark longitudinal band above lateral line; after preservation in formalin this band becomes more distinct; dorsal fin grey or light yellow; caudal fin bright yellow with black oblong spots (Ref. 2916, 86396). |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 90 - 107 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | 12 - 15 |
| Scale rows below lateral line | 13 - 15 |
| Scales around caudal peduncle | |
| Barbels | 0 |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin | present |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes more or less normal |
| Position abdominal before origin of D1 | |
| Spines | |
| Soft-rays |