Morphology Data of Kryptopterus baramensis
Identification keys
Main Ref. Ng, H.H., 2002
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 clearly concave
Type of eyes
Type of mouth/snout
Position of mouth terminal
Type of scales

Pectoral fin length 14.0-16.9% SL; pectoral spine length 9.0-11.0% SL; eye diameter 20.0-23.9% HL; vomerine teeth present in two closely-situated elliptical patches; a distinct nuchal concavity; and mandibular barbels reaching beyond anterior base of anal fin. Pectoral spine and articulated segments sexually dimorphic in mature individuals. Male with spine broad and somewhat flattened dorsoventrally, with 10-12 distinct posterior serrations; proximal articulated segments with 9-18 well-developed posterior serrations. Females with spine slender, with 12-14 smaller posterior serrations; proximal articulated segments with 6-9 small and poorly-developed posterior serrations. Fins hyaline, with small dark-brown spots occasionally present (Ref. 42937).

Ease of Identification

Meristic characteristics of Kryptopterus baramensis

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 10 - 13
on upper limb 4 - 5
total 14 - 18
total 57 - 59


Dorsal fin(s)

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

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number
Spines total
Soft-rays total 70 - 79

Paired fins

Pectoral Attributes  other (see remarks)
Soft-rays   12 - 15
Pelvics Attributes  more or less normal
Soft-rays   8 - 10
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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