| Main Ref. | Shibukawa, K., 2010 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks | Urogenital papilla narrow and pointed in male, broad and rounded in female. |
| Striking features | |
| Body shape lateral | |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | cycloid scales |
| Diagnosis |
This species is readily distinguished from its congeners in having the following characters: head barbels absent (vs. present); segmented dorsal-fin rays 8-9 (vs. typically 10-12); longitudinal scales 24-26 (vs. > 30); transverse scales 8-9 from anal-fin base upward and forward to base of dorsal fin (vs. 12 or more); scales present on upper part of cheek and operculum (vs. absent) (Ref. 84002). |
| 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 | 8 - 9 |
| on upper limb | 1 - 2 |
| total | |
| Vertebrae | |
| preanal | 10 - 10 |
| total | 26 - 26 |
| Attributes | |
| Fins number | 2 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 7 - 7 |
| Soft-rays total | 9 - 9 |
| Adipose fin |
| Attributes | more or less truncate |
| Fins number | 1 |
| Spines total | 1 - 1 |
| Soft-rays total | 7 - 7 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 17 - 19 | |
| Pelvics | Attributes |
| Position | |
| Spines 1 | |
| Soft-rays 5 - 5 |