| Main Ref. | Lourie, S.A., A.C.J. Vincent and H.J. Hall, 1999 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | other |
| Different appearance | always different morphology between mature adults |
| Different colors | |
| Remarks | Males with brood pouch; females with ovipositor (Ref. 205). Males are heavier than females (Ref. 52034). |
| Striking features | striking shape of body |
| Body shape lateral (shape guide) | other |
| Cross section | angular |
| Dorsal head profile | |
| Type of eyes | more or less normal |
| Type of mouth/snout | tube-like |
| Position of mouth | terminal |
| Type of scales | |
| Diagnosis |
Description: (based on 80 specimens): Adult height: 7.0-17.0cm. Rings: 11+36 (34-38). Snout length: 2.3 (2.0-2.6) in head length. Dorsal fin rays: 17-18 covering 2+1 rings. Pectoral fin rays: 16 (15-18). Coronet: low-medium, rounded, overhanging at the back, often with a cup-like depression in the top; sometimes with broad flanges; not spiny. Spines: low, rounded bumps only. Other distinctive characters: deep head; deep body; thick snout. Color pattern: often totally black with a grainy texture; alternatively pale yellow or cream with fairly large, dark spots (especially females); may be sandy colored, blending in with the surroundings. |
| 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 | 0 |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| Spines total | 0 - 0 |
| Soft-rays total | 17 - 18 |
| Adipose fin | absent |
| Attributes | other (see remark) |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 4 - 4 |
| Pectoral | Attributes more or less normal |
| Spines 0 | |
| Soft-rays 15 - 18 | |
| Pelvics | Attributes suppressed/absent |
| Position absent | |
| Spines | |
| Soft-rays |