Morphology Data of Gymnothorax javanicus
Identification keys
Abnormalities
Main Ref. Myers, R.F., 1991
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral eel-like
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Juveniles are tan with numerous large black spots. Adults have black specks that grade into leopard-like spots behind the head and a black area surrounding the gill opening.

Description: Characterized by body depth at gill opening 12-22 in TL; very deep-bodied large adults; origin of dorsal fin anterior to gill opening; anus slightly anterior to middle of body; not extremely long large teeth; front of upper jaw have 5-6 teeth on each side, some with small teeth between; front of upper jaw with 2-3 teeth at median row; 2-3 inner teeth in small individuals (under 30 cm) at side of upper jaw; a row of small sharp teeth in lower jaw, 3-4 inner canines anteriorly on each side (Ref. 90102).

Ease of Identification

Meristic characteristics of Gymnothorax javanicus

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
on upper limb
total
Vertebrae
preanal
total 137 - 143

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total 0 - 0
Soft-rays total
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total 0 - 0
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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