Main Ref. | Skelton, P.H., L.M. Risch and D. Paugy, 2003 |
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 | |
Diagnosi |
Diagnosis: dorsal-fin base distinctly ahead of pelvic-fin insertions; distance from head to dorsal fin less than 20% of standard length; interorbital space about 35% of head length; caudal-peduncle long and relatively slender, its length over twice its depth, ; caudal fin forked, with lower lobe distinctly longer than upper lobe; maxillary barbell rather short, less than 60% of head length; snout length about 60% of head length; branchiostegal membrane weakly notched on midventral line (Ref. 57128). Description: short and depressed head ending in a rather long snout; eyes positioned near posterior end of head; mouth subterminal and rather narrow, its width slightly more than half the head width; barbels rather short, maxillary pair reaching to eye; pectoral and pelvic fins broad and well developed; adipose fin short and rounded; a well developed, crenulated fringe at base of caudal fin; 6+7 principal caudal fin rays (Ref. 57128). Coloration: back normally dark brown or black, with up to 5 lighter cross-bars (Ref. 57128). |
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 | 6 |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | 3 - 6 |
on upper limb | 1 - 2 |
totale | |
Vertebre | |
preanal | |
totale |
Attributes | no striking attributes |
Fins number | 1 |
Finlets No. | Dorsal 0 |
Ventral 0 | |
Spines total | 0 |
Soft-rays total | 7 |
Adipose fin | present |
Attributes | forked; asymmetric |
Fins number | 1 |
Spines total | 0 |
Soft-rays total | 7 - 8 |
Pectoral | Attributes more or less normal |
Spines 0 | |
Soft-rays 9 - 10 | |
Pelvics | Attributes more or less normal |
Position abdominal behind origin of D1 | |
Spines 0 | |
Soft-rays |