Main Ref. | Iwamoto, T. and N.R. Merrett, 1997 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | |
Different appearance | |
Different colors | |
Remarks |
Striking features | |
Body shape lateral | elongated |
Cross section | |
Dorsal head profile | |
Type of eyes | |
Type of mouth/snout | |
Position of mouth | |
Type of scales | |
Diagnosis |
Snout long, narrow, sharply pointed; orbit about 1.4, internasal about 2.0 into snout length; anterolateral margin completely supported by bone. Orbit diameter 1.2 of interorbital width. Mouth small, upper jaw slightly less than orbit diameter. Subopercle terminates in long slender tip. Dermal window of light organ small but prominent, external length about equal to length of posterior nostril. Anus slightly removed from anal fin. Underside of head covered with small prickly scales except along margins; nasal fossa and top of snout scaled. Body scales with 6 to 8 widely divergent spinule rows, middle row largest. First dorsal dark dusky, other fins dusky; body lacking distinctive markings in adults, but with faint to prominent saddles in young; mouth black, gums dark. |
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 | 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 | |
Soft-rays total |
Pectoral | Attributes more or less normal |
Spines 0 | |
Soft-rays 18 - 18 | |
Pelvics | Attributes more or less normal |
Position thoracic beneath origin of D1 | |
Spines | |
Soft-rays |