| Main Ref. | Liu, Y., T. Mao, H. Sudasinghe, R. Chen, J. Yang and M. Meegaskumbura, 2025 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral (shape guide) | fusiform / normal |
| Cross section | compressed |
| 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 set of characters: absence of horn-like structure; absence of eyes or degenerated into dark spots; a distinct nuchal hump; predorsal profile distinctly arched; tip of adpressed rostral barbel extending posteriorly not reaching vertical through anterior margin of sunken eye or dark spot; tip of pelvic-fin rays reaching anus when pelvic-fin rays extended backward; a distinct head shape protruding forward, resembling a duck’s beak; body scaleless; in life, body light golden brown; lateral line pores 41-45; and gill rakers well developed, 9 on first gill arch (Ref. 137885). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 41 - 45 |
| 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 | |
| total |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 7 - 7 |
| Adipose fin |
| Attributes |
| Fins number | 1 |
| Spines total | |
| Soft-rays total | 5 - 5 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 14 - 15 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays 7 - 7 |