| Main Ref. | Ho, H.-C., C.-N. Tang and T.-W. Chu, 2021 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral (shape guide) | |
| Cross section | oval |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
This species is distinguished from its congeners by the following characters: rear portion of tail with a large black blotch and a white posterior end; head small, HL 15.7% TL; ST 4, middle two in pair; SO 7, two pores over posterior nostril; IO 12 or 14; POM 14; D 226; A 122; PAV 77 and TV 145; rictus through a vertical of posterior margin of the pupil; snout shorter than eye diameter; PO-DO 69.4% pectoral-fin length. Colouration: body brownish-gray dorsally, light gray ventrally; dorsal fin dark gray (Ref. 124775). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | 125 - 125 |
| 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 | |
| total | 145 - 145 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 226 - 226 |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total | 122 - 122 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays |