| 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 | striking type of mouth |
| Body shape lateral (shape guide) | fusiform / normal |
| Cross section | |
| Dorsal head profile | clearly concave |
| 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 straight to slightly arched; rostral lobe poorly developed, its free margin smooth; margin of upper lip papillose, its inner surface smooth; body depth 2.5-3.2x SL; depth of caudal peduncle 0.8-1.2x its length; 36-60 (50-150 mm) and 52-65 (150-250 mm) gill rakers; scale formula 5.5-7.5/36-41/6.5-7.5; 3.5-4.5 scales between lateral line and pelvic-fin base; 16 scales around caudal peduncle; 12-15 dorsal fin branched rays; body silvery in life; widely distributed in the Sudanese region (Ref. 2940, 81282). Description: large species; inner surface of lips without transverse folds; snout with discrete tubercles; short barbel at corners of mouth; outer margin of dorsal fin straight or slightly convex; D:IV,12-15; A:III,5; P:17-18; V:9 (Ref. 2940, 81282). Coloration: general appearance rather pale; silvery in life, back greenish to greyish, belly white; scale-centres pink, marginal scale areas set with melanophores forming undulating longitudinal lines, particularly well visible in juveniles; pectoral, pelvic and anal fins pink, dorsal and caudal fins greyish, with pinkish rays (Ref. 2940, 81282). |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | 36 - 41 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | 5 - 8 |
| 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 | 36 - 65 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 16 - 19 |
| Adipose fin | absent |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | |
| Soft-rays total | 8 - 11 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 17 - 18 | |
| Pelvics | Attributes more or less normal |
| Position abdominal behind origin of D1 | |
| Spines 0 | |
| Soft-rays 9 - 9 |