Morphology Data of Mystus rhegma
Identification keys
Main Ref. Roberts, T.R., 1994
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

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
Type of scales

Differs from all other Mystus sensu stricto by its strongly demarcated, narrow, midlateral longitudinal dark stripe (straddling the lateral line canal), and in having base of outer mandibular barbels slightly behind, rather than in front of, a line vertical to posterior margin of labial rictus. Adipose fin relatively short, originating at a distance of about one eye diameter posterior to dorsal fin and extending only a short distance onto caudal peduncle (Ref. 10418). Total gill rakers 24-28 (Ref. 12975). Adipose fin base longer than anal fin base, originating slightly behind dorsal; cranial fontanel extending posteriorly to base of occipital process (Ref. 43281).

Ease of Identification

Meristic characteristics of Mystus rhegma

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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 19 - 28
total 41 - 43


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total 1 - 1
Soft-rays total 7 - 7
Adipose fin present

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number
Spines total
Soft-rays total 11 - 14

Paired fins

Pectoral Attributes  more or less normal
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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