| Main Ref. | Freyhof, J. and D.V. Serov, 2000 |
| 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 |
The presence of 3 bold concentric bands on posterior part of pectoral fin differentiates this species from all other Sewellia species. Combination of characters unique to the species includes: cavity with deep post-oral skinfold around mouth; absence of dark stripes on body; origin of pelvic fin in front of the origin of dorsal fin; origin of pectoral fin behind corner of mouth; pelvic fin reaching origin of anal fin; branched pelvic-fin rays 8-16 with a row of individual serrae; absence of skin-fold between oropectoral membrane and ventral surface of head; 55 scales on lateral line (Ref. 40433). |
| Ease of Identification | easy to distinguish from other species. |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 55 - 55 |
| 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 | 34 - 34 |
| 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 before origin of D1 | |
| Spines | |
| Soft-rays |