Main Ref. | Fischer, W. and P.J.P. Whitehead (eds.), 1974 |
Appearance refers to | Male; Female |
Bones in OsteoBase |
Specialized organs | no special organs |
Different appearance | |
Different colors | |
Remarks |
Striking features | |
Body shape lateral | elongated |
Cross section | oval |
Dorsal head profile | more or less straight |
Type of eyes | more or less normal |
Type of mouth/snout | more or less normal |
Position of mouth | sub-terminal/inferior |
Type of scales | |
Diagnosis |
Head profile concave at nape. Head shield strongly rugose and granulated; supra-occipital process short, about as long as broad, with median keel, hind end concave. Dorsal and pectoral fins with very strong, thick, and coarsely granulated spine; tip of dorsal spine produced into a long filament; adipose fin rather large. Body with metallic blue luster. Tip of dorsal fin blackish, its filament black; pectoral, pelvic and anal fins dusky; caudal fin paler; adipose fin either entirely black or bearing a large black blotch on upper half. |
Ease of Identification |
Lateral Lines | Interrupted: No |
Scales on lateral line | 0 - 0 |
Pored lateral line scales | |
Scales in lateral series | |
Scale rows above lateral line | 0 - 0 |
Scale rows below lateral line | 0 - 0 |
Scales around caudal peduncle | |
Barbels | 0 |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total |
Attributes | |
Fins number | 1 |
Finlets No. | Dorsal |
Ventral | |
Spines total | 1 - 1 |
Soft-rays total | 7 - 7 |
Adipose fin | present |
Attributes | forked; more or less normal |
Fins number | 1 |
Spines total | |
Soft-rays total | 16 - 30 |
Pectoral | Attributes more or less normal |
Spines 1 | |
Soft-rays | |
Pelvics | Attributes more or less normal |
Position abdominal behind origin of D1 | |
Spines | |
Soft-rays 6 - 6 |