Morphology Data of Gnathanodon speciosus
Identification keys
Main Ref. Randall, J.E., G.R. Allen and R.C. Steene, 1990
Appearance refers to Male; Female
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 compressed
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout clearly protrusible
Position of mouth terminal
Type of scales cycloid scales

Description: Juveniles and subadult bright yellow to silvery with broad and narrow black bars alternating; fins yellowish. Adults generally silvery grey with few black blotches or spots on sides and very faint bars, if present. Lips thick and fleshy; upper jaw strongly protractile. Breast completely scaled. (Ref. 2334, 90102) LL scutes 17-26 (Ref. 90102). Pectorals falcate; anal fin with 2 detached spines (Ref. 2334).

Ease of Identification

Meristic characteristics of Gnathanodon speciosus

Lateral Lines 1 Interrupted: No
Scales on lateral line 17 - 24
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 7 - 9
on upper limb 19 - 22
total 27 - 30


Dorsal fin(s)

Attributes no striking attributes
Fins number 2
Finlets No. Dorsal   
Spines total 8 - 8
Soft-rays total 18 - 20
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number 2
Spines total 3 - 3
Soft-rays total 15 - 17

Paired fins

Pectoral Attributes  more or less normal
Pelvics Attributes  more or less normal
Position    thoracic  before origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
Modified by Olisa, Kristine Elaine Paz
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