| Main Ref. | Dawson, C.E., 1986 |
| 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). |
| Striking features | |
| Body shape lateral (shape guide) | eel-like |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | tube-like |
| Position of mouth | terminal |
| Type of scales | |
| Diagnosis |
Description: Dorsal fin with 60-69 rays; anal fin with 4 rays (Ref. 52193). Rings (18-20)+(21-23); anal ring about midway along length of fish (Ref. 52193). Male brood-pouch abdominal, without protective membranous folds (Ref. 52193). Colouration: Bluish green to yellowish brown with fine black streaks (Ref. 52193). |
| 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 | 60 - 69 |
| Adipose fin | absent |
| Attributes |
| Fins number | 1 |
| Spines total | 0 - 0 |
| Soft-rays total | 4 - 4 |
| Pectoral | Attributes |
| Spines 0 | |
| Soft-rays 15 - 20 | |
| Pelvics | Attributes suppressed/absent |
| Position absent | |
| Spines 0 | |
| Soft-rays 0 - 0 |