| Main Ref. | Gibbs, R.H. Jr., T.A. Clarke and J.R. Gomon, 1983 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Two terminal bulbs separated by a short interspace (0.5-1.8 times length of distal bulb in larger specimens; as much as 2.4 times in smaller ones). Barbel 39-62% SL, rarely slightly less. Terminal filament short, without branches. Distal bulb 0.5-1 times length of proximal bulb in large specimens (up to 1.8 times in smaller ones). Axis of stem pigmented, variably light to dark. External chevron-shaped or striated areas on stem seldom pigmented in specimens larger than 8 cm. Paired dorsal spots between occiput and dorsal-fin origin usually 8, sometimes 7 or 9 (Ref. 11333). |
| Ease of Identification |
| Lateral Lines | 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 | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total | 68 - 68 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 24 - 24 |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total | 40 - 40 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 3 - 3 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays 7 - 7 |