| Main Ref. | Motomura, H. and T. Mukai, 2006 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | fusiform / normal |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | clearly protrusible |
| Position of mouth | sub-terminal/inferior |
| Type of scales | |
| Diagnosis |
Distinguished from all other members of the family Callionymidae, except Draculo mirabilis (=Eleutherochir mirabilis) by the absence of first dorsal fin. Differs from D. mirabilis by possessing 8 dorsal-fin rays vs. 12-14 rays, 7 anal-fin rays vs. 12-14, all anal-fin rays, except the last, unbranched vs. all rays branched), and the opercular membrane fused with the body vs. not fused (Ref. 56950). |
| 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 | 20 - 20 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 8 - 8 |
| Adipose fin | absent |
| Attributes | more or less truncate |
| Fins number | |
| Spines total | |
| Soft-rays total | 7 - 7 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 16 - 16 | |
| Pelvics | Attributes |
| Position abdominal | |
| Spines | |
| Soft-rays 6 - 6 |