| Main Ref. | Keith, P. and J. Allardi (coords.), 2001 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | fusiform / normal |
| Cross section | oval |
| 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 | |
| Type of scales | |
| Diagnosis |
Diagnosis: Body olivaceous to silvery. Barbels absent. Keels extend from isthmus to anus. Edge of last simple dorsal ray not serrated. Branched anal rays 12-13.5 (Ref. 13274). It differs from Hypophthalmichthys nobilis by having sharp scaleless keel from pectoral region to anal origin, 650-820 long, slender gill rakers, head length 24-29% of standard length, and plain pale coloration, greenish grey above, whitish below (Ref. 59043). Description: Body club-shaped (Ref. 52193). Large head; mouth small, upturned; eyes set low, below the level of the mouth; gill rakers attached to each other to form a sieve; intestine extended (Ref. 52193). Dorsal fin with 3 unbranched and 7 branched rays; anal fin with 3 unbranched and 12 branched rays; pelvic fins in front of origin of dorsal fin (Ref. 52193). Scales minute; 110-115 scales in lateral line (Ref. 52193). Colouration: Body olivaceous to silvery (Ref. 40476) |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 108 - 124 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | 28 - 33 |
| Scale rows below lateral line | 16 - 28 |
| Scales around caudal peduncle | |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | 650 - 820 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 0 - 0 |
| Soft-rays total | 7 - 10 |
| Adipose fin | absent |
| Attributes | forked; more or less normal |
| Fins number | |
| Spines total | 0 - 0 |
| Soft-rays total | 11 - 17 |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes more or less normal |
| Position abdominal before origin of D1 | |
| Spines 1 | |
| Soft-rays 7 - 7 |