Morphology Data of Gnatholepis gymnocara
Identification keys
Abnormalities
Main Ref. Larson, H.K. and D.J. Buckle, 2012
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Males are more slender, have longer median fins, and usually shorter heads than females (Ref. 41653).

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section oval
Dorsal head profile clearly convex
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth sub-terminal/inferior
Type of scales cycloid and ctenoid scales
Diagnosis

Distinguished by the following characteristics: small Gnatholepis (up to 35.4 mm SL) lacking scales on side of cheek, opercle and predorsal midline, few cycloid scales present on pectoral fin base and on breast; no distinct flap on end of lower lip (low fold may be present); no distinct canine or enlarged teeth; second dorsal fin rays I,11; anal fin rays I,11-12 (usually I,12); pectoral rays 15-19 (usually 17); lateral scales 26-28, ctenoid; predorsal scales absent from nape midline, scales on side of head reaching to nearly behind eyes; body pale with dusky speckling and mid-lateral row of six dusky blotches and horizontal row of darker spots and short streaks, an irregular cross-shaped dark mark on cheek extending down from eye, pupil-sized brown spot just above mid-point of caudal fin base, males with small black spot on rear part of first dorsal fin (Ref. 92171).

Ease of Identification

Meristic characteristics of Gnatholepis gymnocara

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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 3 - 3
on upper limb 1 - 1
total 4 - 4
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 2
Finlets No. Dorsal   
Ventral  
Spines total 7 - 7
Soft-rays total 11 - 11
Adipose fin

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 11 - 12

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   15 - 19
Pelvics Attributes  joint, cup-like
Position    thoracic  before origin of D1
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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