Morphology Summary - Opistognathus vigilax
Morphology Data of Opistognathus vigilax
Identification keys
Abnormalities
Main Ref. Smith-Vaniz, W.F., 2023
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  (shape guide) elongated
Cross section compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished from its congeners by the following set of characters: rigid upper jaw with no flexible lamina posteriorly, extending 0.5-0.9 eye diameters behind posterior margin of orbit in specimens 32.0-45.0 mm SL; infraorbitals relatively slender and tubular, all except lacrimal open laterally, 3rd infraorbital with short posterolateral projecting arm, no suborbital shelf; D X-XI, 11-12 (exceptionally 10); A II, 10-11; vertebrae 10+16; total gill rakers 26-30; shoulder above pectoral-fin base with dark spot approximately equal pupil diameter; small dark blotch on inner surface of pale mouth behind dark part of each dentary; dorsal fin with a prominent partial ocellus with inner dark spot beginning at spine 2 or 3 and ending between spines 3-5. (Ref. 128653).

Ease of Identification

Meristic characteristics of Opistognathus vigilax

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 26 - 30
Vertebrae
preanal 10 - 10
total 26 - 26

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total 10 - 11
Soft-rays total 11 - 12
Adipose fin

Caudal fin  (shape guide)

Attributes

Anal fin(s)

Fins number
Spines total 2 - 2
Soft-rays total 10 - 11

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   20 - 23
Pelvics Attributes  
Position    
Spines     
Soft-rays   
(e.g. 9948)
(e.g. oophagy)
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