| Main Ref. | Iwata, A., S. Hosoya and H.K. Larson, 2001 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | fusiform / normal |
| Cross section | compressed |
| Dorsal head profile | clearly convex |
| Type of eyes | more or less normal |
| Type of mouth/snout | more or less normal |
| Position of mouth | terminal |
| Type of scales | scales embedded or partly/completely absent |
| Diagnosis |
Pelvic fins with 0 or 1 spine (Ref. 43239); formed into a long rod, extending posteriorly to vertical line through mid point of 3rd abdominal vertebra.; left and right pelvic bones distinctly separated from each other posteriorly; subpelvic process absent in both sexes. Ectopterygoid and quadrate widely separated in secondary male. Some sensory papillae present on branchiostegal membranes. Maxillo-vomerine meniscus present. First dorsal fin absent. Dorsal- and anal-fin pterygiophores each supporting one unbranched soft ray, with supernumerary ray on first pterygiophore of anal fin. Abdominal vertebrae 10, caudal 15. First or 2 dorsal pterygiophores inserting between 9th and 10th neural spines. No scales (Ref. 48341). |
| 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 | 10 - 10 |
| total | 25 - 25 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 13 - 16 |
| Adipose fin | absent |
| Attributes | more or less truncate; more or less normal |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 14 - 15 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 17 - 20 | |
| Pelvics | Attributes other (see remarks) |
| Position thoracic before origin of D1 | |
| Spines 1 | |
| Soft-rays 3 - 3 |