Morphology Summary - Opistognathus hyalinus
Morphology Data of Opistognathus hyalinus
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 lacking flexible lamina posteriorly, extending about 0.7-1.0 eye diameters behind posterior margin of orbit; infraorbitals all trough-like, open laterally; absence of suborbital shelf on 3rd infraorbital; D XI, 10-11; A II, 10; vertebrae 10+15-17, typically 16; posterior infraorbital pore positions all or mostly occupied by single pores; preopercular pore positions occupied by single pores; total gill rakers 33-39; spinous dorsal fin with a wide submarginal dusky stripe, and interradial membranes between spines 1-4 or 5 either with or without a dark blotch of variable size and intensity; other fins unpigmented. (Ref. 128653).

Ease of Identification

Meristic characteristics of Opistognathus hyalinus

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 33 - 39
Vertebrae
preanal
total

Fins

Dorsal fin(s)

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

Caudal fin  (shape guide)

Attributes

Anal fin(s)

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

Paired fins

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