Morphology Data of Nangra assamensis
Identification keys
Main Ref. Roberts, T.R. and C.J. Ferraris Jr., 1998
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 compressed
Dorsal head profile clearly convex
Type of eyes
Type of mouth/snout
Position of mouth sub-terminal/inferior
Type of scales

Dorsal fin with 6 branched rays; dorsal and pectoral-fin spines with filamentous extensions. Anal fin with 4-5 simple rays, 7-9 branched rays. Snout strongly projecting. Nasal barbel reaching only to posterior margin of orbit; maxillary barbel reaching to end of pelvic fin or to anal-fin origin; maxillary barbel membrane with narrow attachment to cheek and broad attachment to corner of mouth; mental barbels reaching posteriorly to end of head. Vent opens into pouch or pseudovent, with broad membranous opening near pelvic fin tip. Head, body and caudal peduncle slightly more elongate than other congeners (Ref. 40780).

Ease of Identification

Meristic characteristics of Nangra assamensis

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 5 - 6
on upper limb 1 - 2
total 6 - 7
preanal 18 - 20
total 35 - 37


Dorsal fin(s)

Fins number 1
Finlets No. Dorsal   
Spines total 1 - 1
Soft-rays total 6 - 6
Adipose fin present

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  more or less normal
Spines     1
Soft-rays   8 - 8
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
Modified by Torres, Armi G.
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