Main Ref. | Ng, H.H. and R.K. Hadiaty, 2005 |
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 | sub-terminal/inferior |
Type of scales | |
Diagnosis |
Distinguished from all other Southeast Asian congeners, except Mystus castaneus, M. impluviatus and M. nigriceps by the following combination of characters: a moderately long (29-37% SL), low adipose-fin, uniform body color, fossa on midline of the cranium not reaching to the base of the supraoccipital process and extremely long maxillary barbels that reach beyond the base of the caudal fin (Ref. 55439). Differs from M. castaneus, M. impluviatus and M. nigriceps in lacking a dark triangular mark at the base of the caudal fin. Further differs from M. nigriceps in having a longer (34.3-36.3% SL vs. 26.3-31.4), deeper (6.7-7.5% SL vs. 4.1-6.0) adipose fin and longer pelvic fins (17.6-20.2% SL vs. 13.4-16.7); and from M. castaenus and M. impluviatus in having a more gently-sloping dorsal profile of the head. Differs also from M. impluviatus in lacking (vs. presence) of fontanel on the supraoccipital and having a deeper adipose fin (6.7-7.5% SL vs. 4.7-6.0) (Ref. 55439). |
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 | 8 |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | |
on upper limb | |
total | 24 - 30 |
Vertebrae | |
preanal | |
total | 38 - 41 |
Attributes | |
Fins number | |
Finlets No. | Dorsal |
Ventral | |
Spines total | 1 - 1 |
Soft-rays total | 7 - 7 |
Adipose fin | present |
Attributes | forked |
Fins number | |
Spines total | |
Soft-rays total | 12 - 14 |
Pectoral | Attributes |
Spines 1 | |
Soft-rays 8 - 9 | |
Pelvics | Attributes |
Position abdominal behind origin of D1 | |
Spines | |
Soft-rays 6 - 6 |