Main Ref. | Cohen, D.M., T. Inada, T. Iwamoto and N. Scialabba, 1990 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | |
Different appearance | |
Different colors | |
Remarks |
Striking features | striking shape of body |
Body shape lateral | elongated |
Cross section | circular |
Dorsal head profile | clearly convex |
Type of eyes | more or less normal |
Type of mouth/snout | more or less normal |
Position of mouth | sub-terminal/inferior |
Type of scales | ctenoid scales |
Diagnosis |
Eyes large; snout long and sharply pointed, its anterolateral margin incompletely supported by bone. Head ridges strong but with short, generally conical spinules; the terminal snout scute longer than wide and with blunt lateral arms; the underside of the snout naked medially. Light organ large, visible externally as a large blackish streak extending from the anus to a long black fossa on the rear half of the chest. Scales covered with fine spinules in parallel to slightly divergent rows. Color is pale light grayish-brown to tawny, blackish or densely punctate on belly and chest; the mouth cavity blackish (Ref. 1371). |
Ease of Identification |
Lateral Lines | 1 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 | 1 |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | |
on upper limb | |
total | 7 - 9 |
Vertebrae | |
preanal | |
total |
Attributes | extending over most of the back length |
Fins number | 2 |
Finlets No. | Dorsal 0 - 0 |
Ventral 0 - 0 | |
Spines total | 2 - 2 |
Soft-rays total | |
Adipose fin | absent |
Attributes |
Fins number | 1 |
Spines total | 0 - 0 |
Soft-rays total |
Pectoral | Attributes more or less normal |
Spines 0 | |
Soft-rays 17 - 20 | |
Pelvics | Attributes more or less normal |
Position abdominal beneath origin of D1 | |
Spines | |
Soft-rays |