| Main Ref. | Andriyashev, A.P., 1998 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Pleural ribs absent. Hypural plate single, no slit. Gill slit small but reaching ventrally past 4th pectoral ray. Pectoral fin not overlapping the anal fin origin; 5 notched rays, spaced, short to rudimentary (11+5+6). Head 19.8%, preanal 31.4%, disk 6.0%. Peritoneum black (Ref. 34289). |
| 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 | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 54 - 54 |
| Adipose fin | absent |
| Attributes | more or less truncate |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 48 - 48 |
| Pectoral | Attributes |
| Spines 0 | |
| Soft-rays 22 - 22 | |
| Pelvics | Attributes part of sucker-disc |
| Position | |
| Spines 0 | |
| Soft-rays 0 - 0 |