| Main Ref. | Freyhof, J., M. Kottelat and A. Nolte, 2005 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Diagnosis |
Can be distinguished from other species of Cottus in the Danube drainage by the combination of the following characters: dorsal head length 19-20% SL; 12-13 1/2 anal-fin rays; 18-19 1/2 rays in second dorsal fin; predorsal length 29-30% SL; distance from tip of snout to origin of second dorsal fin 47-50% SL; no distinct transverse bands on pelvic fin; no prickling on body (Ref. 55856). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | 32 - 35 |
| 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 | 2 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin | absent |
| Attributes | more or less truncate |
| Fins number | |
| Spines total | |
| Soft-rays total | 12 - 13 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 12 - 14 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays 4 |