| Main Ref. | Risch, L.M., 2003 |
| 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 | |
| Diagnosis |
Diagnosis: elongate dwarf species, about 7-9 times as long as deep; occipital process scarcely developed and well separated from nuchal plates; humeral spine well visible; eyes very small, round and in dorsal position; dorsal-fin base comprised 3-4 times in standard length and longer than, or subequal to, adipose-fin base; fin-ray counts: dorsal 14-16 (branched), pectoral 6 (branched), anal 4-7 simple and 5-7 branched; number of gill rakers on first gill arch: 1 or 2/4 or 5; colour pattern marbled (Ref. 57126). Description: nasal barbels absent (Ref. 57126). Coloration: marbled (Ref. 57126). |
| 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 | 6 |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | 4 - 5 |
| on upper limb | 1 - 2 |
| total | |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal 0 |
| Ventral 0 | |
| Spines total | |
| Soft-rays total | |
| Adipose fin | present |
| Attributes | more or less truncate; more or less normal |
| Fins number | 1 |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes more or less normal |
| Position abdominal behind origin of D1 | |
| Spines | |
| Soft-rays |