| Main Ref. | Collette, B.B., 1999 |
| 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 |
This species is distinguished by the following characters: one dark spot on sides of body (below the dorsal fin); anal-fin rays 11-14 (usually 12-13); dorsal fin with well-developed anterior lobe, pigmented on anterior part; body width 1.3-1.8 times its depth; absence of scales on upper jaw; no preorbital ridge (Ref. 9843). |
| 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 | 20 - 24 |
| on upper limb | 7 - 9 |
| total | 27 - 33 |
| Vertebrae | |
| preanal | 35 - 37 |
| total | 52 - 55 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 0 - 0 |
| Soft-rays total | 13 - 15 |
| Adipose fin |
| Attributes |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 11 - 14 |
| Pectoral | Attributes |
| Spines 0 | |
| Soft-rays 12 - 13 | |
| Pelvics | Attributes |
| Position | |
| Spines 0 | |
| Soft-rays |