| Main Ref. | Robins, C.R., R.H. Robins and M.E. Brown, 2012 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral (shape guide) | eel-like |
| Cross section | compressed |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
This species have the following characteristics: pyloric caeca usually 7-8 in 1 or 2 whorls, typically 6+2; usually 3 rudimentary gill rakers on the upper arm of the first arch, 4-5 developed rakers on lower arm, usually 2-3 rudimentary rakers anteriorly on the lower arm; total gill rakers 9-13; dorsal-fin origin between neural spines 3-4; head and body uniformly dusky; pectoral fins clear; dorsal and anal fins clear with a dark edge, most developed in the anal fin; posterior part of the roof of the mouth, upper pharyngeal region, and gill bars are blackish; esophagus, caeca, and anterior part of the intestine are blackish (Ref. 91765). |
| 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 | 14 - 16 |
| total | 74 - 77 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 133 - 141 |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total | 112 - 121 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 19 - 22 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays |