Morphology Data of Opistognathus alleni
Identification keys
Abnormalities
Main Ref. Smith-Vaniz, W.F., 2004
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 elongated
Cross section oval
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is characterized by the following: D X,19 (rarely 20); about 21-31 oblique scale rows in longitudinal series on body; no scales anterolaterally forward of verticals from 6th to 9th segmented dorsal-fin rays; a broad dark submarginal stripe on spinous dorsal fin; spine tips with pale fleshy tabs; 1-3 vomerine teeth (Ref. 76827). further diagnosed by the rigid upper jaw lacking flexible lamina posteriorly, extending 0.4-0.6 eye diameters behind posterior margin of orbit; infraorbitals are moderately robust, the second and third infraorbitals with large sensory canal openings, third infraorbital with very slight suborbital shelf; A II,17-18; vertebrae 10+22, rarely 23; lateral line terminus below segmented dorsal-fin rays 13-17; no scales forward of verticals from segmented dorsal-fin rays 6-9; vomerine teeth 1-3; the tips of dorsal-fin spines with pale fleshy tabs; dorsal fin with submarginal dark stripe and the anal fin with a narrow, dark, submarginal stripe; belly with scattered white scattered white spots (Ref. 128653).

Ease of Identification

Meristic characteristics of Opistognathus alleni

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 16 - 18
on upper limb 8 - 10
total 24 - 28
Vertebrae
preanal 10 - 10
total 32 - 33

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 10 - 10
Soft-rays total 19 - 20
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 2 - 2
Soft-rays total 17 - 18

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   19 - 20
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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