Morphology Data of Gymnothorax monochrous
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

Chestnut brown species that becomes darker posteriorly. Differs from the uniformly brown G. pindae by lacking the fine serrations on the posterior edges of the lower jaw teeth and by having a mouth that may not quite close completely.

Description: Characterized by body depth at gill opening 19-22 in TL; origin of dorsal fin midway between corner of mouth and gill opening; anus anterior to middle of body; preanal length about 2.1 in TL; compressed teeth in single row in jaws; 2-4 canines in upper jaw anteriorly; median row of long canines (Ref. 90102).

Ease of Identification

Meristic characteristics of Gymnothorax monochrous

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 134 - 145

Fins

Dorsal fin(s)

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

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total 0 - 0
Soft-rays total 0 - 0

Paired fins

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