Morphology Data of Opistognathus asper
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
Cross section oval
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished by the following characters: rigid upper jaw lacking flexible lamina posteriorly and extending about 0.7 eye diameters behind posterior margin of orbit; infraorbitals are relatively slender and tubular, third infraorbital with short posterolateral projecting arm ending with large sensory canal opening, no suborbital shelf; D XI,11-12; A II,10; vertebrae 10+16; total gill rakers 32-34; tips of the dorsal-fin spines with conspicuous pale tabs; dorsum with a row of 5 dark blotches that extend distinctly onto the dorsal fin; the last blotch on dorsal fin at least as wide as anterior blotches; scale rows on the body appear to form series of narrow dark stripes (Ref. 128653).

Ease of Identification

Meristic characteristics of Opistognathus asper

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 32 - 34
Vertebrae
preanal 10 - 10
total 26 - 26

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 11 - 11
Soft-rays total 11 - 12
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 2 - 2
Soft-rays total 10 - 10

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   
Pelvics Attributes  
Position    
Spines     
Soft-rays   
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