| Main Ref. | Hidaka, K., Y. Tsukamoto and Y. Iwatsuki, 2017 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | oval |
| Dorsal head profile | |
| Type of eyes | more or less normal |
| Type of mouth/snout | more or less normal |
| Position of mouth | sub-terminal/inferior |
| Diagnosis |
This species is distinguished by the following set of characters (counts & % in parentheses for lectotype): no supraneural bones; dorsal-fin rays 51-57 (mode 52); total vertebrae 88-92 (91); pored lateral-line scales 79-89 (84); pre-dorsal scale rows 3-8 (8); head length 24-32 % (mean 30 %) of SL); pectoral-fin length 16-21 % (19 %) of SL; pre-dorsal-fin length 27-34 % (30 %) of SL; dorsal-fin base length 53-64 % (60 %) of SL; postorbital length 13-16 % (14 %) of SL; upper caudal-fin length 18-31 % (24 %) of SL (Ref. 109573). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 85 - 90 |
| Pored lateral line scales | 79 - 89 |
| Scales in lateral series | |
| Scale rows above lateral line | 5 - 8 |
| Scale rows below lateral line | 5 - 7 |
| Scales around caudal peduncle | |
| Barbels | 0 |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | 12 - 15 |
| on upper limb | 3 - 8 |
| total | 16 - 21 |
| Vertebrae | |
| preanal | |
| total | 88 - 92 |
| Attributes | extending over most of the back length |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 51 - 57 |
| Adipose fin | absent |
| Attributes |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 11 - 13 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 13 - 17 | |
| Pelvics | Attributes more or less normal |
| Position abdominal behind origin of D1 | |
| Spines 0 | |
| Soft-rays 8 - 11 |