Morphology Data of Mystus ngasep
Identification keys
Main Ref. Darshan, A., W. Vishwanath, P.C. Mahanta and A. Barat, 2011
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Males possess a long genital papilla reaching to the base of the second branched anal-fin ray (vs. rounded genital opening in females).

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral elongated
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth sub-terminal/inferior

Differs from congeners in having a unique combination of the following characters: a distinct dark tympanic spot and three brown stripes separated by pale narrow longitudinal lines on the sides of the body; cranial fontanel reaching the base of the occipital process; a long-based adipose fin contacting the base of the last dorsal-fin ray anteriorly; 16-19 gill rakers on the first branchial arch; a slender cleithral process; pectoral spine with 9-11 serrations on the posterior edge; eye small with diameter 16.5-19.8 % HL; pectoral and anal fins with 9-10 and 8-9 branched rays respectively; and short maxillary barbel (200.0-235.0 % HL) (Ref. 88771).

Description: Dorsal fin with spinelet, spine, and seven branched rays; anal fin with iii-v, 8-9 rays, anterior two simple rays minute, visible in alizarin stained specimens; first branchial arch with 16-19 gill rakers (Ref. 88771).

Ease of Identification

Meristic characteristics of Mystus ngasep

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 16 - 19
total 40 - 41


Dorsal fin(s)

Attributes no striking attributes
Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total
Adipose fin present

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  more or less normal
Spines     1
Soft-rays   9 - 10
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Soft-rays   6 - 6
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Torres, Armi G.
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17