| 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 |
| Type of scales | |
| Diagnosis |
Interpelvic process small and bifid. Lateral line gradually curving down toward caudal peduncle. Intestine with 2 folds and 3 limbs. Swim bladder absent. Body covered with small scales. Juveniles (less than 10 cm) marked with 12-20 vertical bands which becomes less distinct or break into spots in larger fish. |
| 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 | 5 - 11 |
| on upper limb | 1 - 2 |
| total | 6 - 13 |
| Vertebrae | |
| preanal | |
| total | 44 - 46 |
| Attributes | no striking attributes |
| Fins number | 2 |
| Finlets No. | Dorsal 8 - 10 |
| Ventral 7 - 10 | |
| Spines total | 13 - 15 |
| Soft-rays total | 19 - 22 |
| Adipose fin | absent |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 19 - 22 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 22 - 25 | |
| Pelvics | Attributes more or less normal |
| Position thoracic beneath origin of D1 | |
| Spines 1 | |
| Soft-rays 5 - 5 |