Morphology Data of Opsarius malabaricus
Identification keys
Main Ref. Knight, J.D.M., A. Rai, R.K.P. D'Souza and B. Vijaykrishnan, 2015
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 fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

Barilius malabaricus can be separated from B. ardens by having a unique color pattern consisting of a single or a double row of spots along the length of the body, the first row with 9-13 round or oval bluish-green spots 1-2 scales high and 1-2 scales wide and the second row, if present, with 3-4 smaller spots reaching up to the anal-fin origin (vs. a row of 7-9 large, vertically-elongate, bluish-green blotches 4-6 scales high and 2-3 scales wide along the length of the body, of which in large adults the first three blotches are fragmented into a smaller row of blotches). It differs from B. ardens by having 5+4+2 (vs. 5+4+3) teeth on fifth ceratobranchial. It can be distinguished from B. canarensis and B. bakeri by having 11½ (vs. 10½) branched dorsal-fin rays and 14½-15½ (vs. 13½) branched anal-fin rays, and having the dorsal and anal fins margined with bright orange (vs. broadly margined with white). It further differs from B. canarensis and B. bakeri by having well-defined gill rakers (vs. fleshy, rudimentary gill rakers) (Ref. 10048).

Ease of Identification

Meristic characteristics of Opsarius malabaricus

Lateral Lines Interrupted: No
Scales on lateral line 36 - 38
Pored lateral line scales 36 - 38
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line 2.5 - 3
Scales around caudal peduncle
Barbels 4
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Spines total
Soft-rays total 14 - 14
Adipose fin absent

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total 17 - 17

Paired fins

Pectoral Attributes  more or less normal
Soft-rays   12 - 13
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Soft-rays   9 - 9
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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