| Main Ref. | Parin, N.V., 2009 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral (shape guide) | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
This species is distinguished by its large size (SL to 25 ?m), moderate (43-46) number of vertebrae, 26-32 predorsal scales, and 7-9 scales in the oblique transverse row between the dorsal fin origin and the lateral line; pectoral fin I with 13-15 rays; 20-26 branchial rakers (usually 22-24); jaw teeth very small (dental index 0.07-0.09); no palatine teeth; pectoral fins dark gray with an oblique light triangular stripe ('mirror'), narrowing upwards and extending to the 4th ray from below; ventral fins of adults have a large bright black spot in the distal part; the specific feature of coloration clearly distinguishes the described species from all other species of Ptenichthys (Ref. 82420). |
| 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 | |
| total |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays |