Morphology Data of Vanderhorstia opercularis
Identification keys
Abnormalities
Main Ref. Randall, J.E., 2007
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
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: D VI-I,12; A I,12; pectoral rays 18-20; scales in longitudinal series on body 40; scales ctenoid posteriorly, cycloid anteriorly; head or prepectoral area without scales, those posteriorly on nape embedded and difficult to count; body depth 4.85-5.5 in SL; third dorsal spine of male filamentous, 2.35-2.95 in SL; caudal fin pointed and long, 1.95 in SL (in paratype; appears to have been injured and regenerating in holotype); paired fins extending beyond origin of anal fin; body with four dusky bars, each with a large darker spot; an oblique blackish bar from nape across posterior head containing a black spot on opercle; numerous small pale spots (orange-yellow in life) on head, body, and fins except pectorals (Ref. 59177).

Ease of Identification

Meristic characteristics of Vanderhorstia opercularis

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 13 - 13
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 10 - 10
on upper limb 2 - 2
total 11 - 11
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 2
Finlets No. Dorsal   
Ventral  
Spines total 7 - 7
Soft-rays total 12 - 12
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 12 - 12

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   18 - 19
Pelvics Attributes  
Position    
Spines     1
Soft-rays   5 - 5
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