| Main Ref. | Collette, B.B. and C.E. Nauen, 1983 |
| 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 | 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 | terminal |
| Diagnosis |
Interpelvic process small and bifid. Body covered with small scales. Lateral line gradually curving down toward caudal peduncle. Intestine with 2 folds and 3 limbs. Swim bladder absent. Some large individuals with thin vertical bars. Anterior half of first dorsal fin and margin of posterior half of first fin black. |
| Ease of Identification |
| Lateral Lines | 1 Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | |
| Barbels | 0 |
| Gill clefts (sharks/rays only) | absent |
| Gill rakers | |
| on lower limb | 10 - 13 |
| on upper limb | 1 - 3 |
| total | 12 - 15 |
| Vertebrae | |
| preanal | 18 - 19 |
| total | 46 - 47 |
| Attributes | no striking attributes |
| Fins number | 2 |
| Finlets No. | Dorsal 7 - 9 |
| Ventral 7 - 9 | |
| Spines total | 15 - 18 |
| Soft-rays total | 0 - 0 |
| Adipose fin | absent |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | |
| Soft-rays total | 17 - 20 |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays 20 - 22 | |
| Pelvics | Attributes more or less normal |
| Position thoracic beneath origin of D1 | |
| Spines | |
| Soft-rays |