| Main Ref. | Sato, T. and T. Nakabo, 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 | |
| Type of scales | |
| Diagnosis |
Second and third dorsal fin rays very elongated, prolonged filamentously, extending when depressed well beyond adipose fin in males, not quite reaching adipose fin in females (Ref. 49923). Sexually dimorphic in dorsal and caudal fin coloration: dorsal fin with a black upper margin broader in males than in females; caudal fin white with a black posterior margin on each lobe in males, black margin absent in females (Ref. 49923). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | 44 - 46 |
| Scales in lateral series | |
| Scale rows above lateral line | 2.5 - 3.5 |
| Scale rows below lateral line | 2.5 - 2.5 |
| Scales around caudal peduncle | |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | 21 - 24 |
| on upper limb | 5 - 8 |
| total | 28 - 32 |
| Vertebrae | |
| preanal | |
| total | 42 - 44 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 11 - 11 |
| Adipose fin | present |
| Attributes | forked; more or less normal |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 8 - 10 |
| Pectoral | Attributes rays very elongated |
| Spines 0 | |
| Soft-rays 17 - 19 | |
| Pelvics | Attributes more or less normal |
| Position abdominal behind origin of D1 | |
| Spines 0 | |
| Soft-rays 9 - 9 |