Main Ref. | Lévêque, C., 2003 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | no special organs |
Different appearance | males alike females |
Different colors | males alike females |
Remarks |
Striking features | none |
Body shape lateral | fusiform / normal |
Cross section | compressed |
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 | superior |
Type of scales | cycloid scales |
Diagnosis |
Diagnosis: last simple dorsal-fin ray smooth on hind margin; scale formula 2.5/21-23/2.5-3.5; 1.5 scales between lateral line and pelvic-fin base; 8 scales around caudal peduncle; lateral-line scales distinctly deeper than other scales on sides; 8 branched dorsal fin rays; anterior barbel not reaching to anterior margin of eye; posterior barbel reaching to, or extending beyond, posterior half of eye; lateral line complete and slightly depressed below dorsal fin; maximum reported size 30 mm SL (Ref. 2940, 81282). Description: small species with moderately compressed body; two pairs of barbels; morphologically closely related to B. hypsolepis, the latter mainly found in the Sahelian basins to the west of the Chad; D:III,8; A:III,5; P:14-15; V:I,7 (Ref. 2940, 81282) Coloration: body pale, with metallic-grey reflections; back with purple or very dark reddish-brown network formed by the pigmented edges of scales; fins and sides of head faintly pink (Ref. 2940, 81282). |
Ease of Identification |
Lateral Lines | 1 Interrupted: No |
Scales on lateral line | 21 - 23 |
Pored lateral line scales | |
Scales in lateral series | |
Scale rows above lateral line | 2 - 3 |
Scale rows below lateral line | 2 - 4 |
Scales around caudal peduncle | 8 - 8 |
Barbels | 4 |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | 4 - 6 |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total |
Attributes | no striking attributes |
Fins number | 1 |
Finlets No. | Dorsal |
Ventral | |
Spines total | |
Soft-rays total | 11 - 11 |
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 14 - 15 | |
Pelvics | Attributes more or less normal |
Position abdominal before origin of D1 | |
Spines | |
Soft-rays 8 - 8 |