Main Ref. | Iwamoto, T. and A. Williams, 1999 |
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, 43-49% of HL, anterolateral margin not completely supported by bone; characteristic scales overlap anterolaterally onto ventral snout surface; orbit diameter 22-25% of HL, 1.8-2.2 times into snout length; upper jaw 24-27% of HL; chin barbel short, about equal to length of first gill slit; subopercle lacking a prolonged narrow flap. Light organ extends from behind isthmus to front of anus. Underside of head naked; nasal fossa naked; body scales thin, spinules short, fine, aligned in close parallel rows. Conspicuous body markings consisting of blotches, spots and occasional ring on dorsum, becoming a narrow dorsal stripe to end of tail; belly between periproct and pelvic fin bases lacking melanophores; maxillary ramus immaculate (rarely with 2-3 melanophores). First dorsal fin with membrane between second spinous ray and first segmented ray black; anterior end of anal fin blackish distally. Pyloric caeca 8-11, usually 10-11; P i14-i15, rarely i16. |
Ease of Identification |
Lateral Lines | Interrupted: No |
Scales on lateral line | 36 - 43 |
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 | 8 - 9 |
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 | |
Soft-rays | |
Pelvics | Attributes more or less normal |
Position thoracic beneath origin of D1 | |
Spines | |
Soft-rays |