Morphology Data of Priolepis billbrooksi
Identification keys
Abnormalities
Main Ref. Allen, G.R., M.V. Erdmann and W.M. Brooks, 2018
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 set of characters: D VI+I,9-10 (usually 9), with second dorsal-fin spine forming an elongate filament extending to between base of fourth and last segmented dorsal-fin ray when adpressed; A I,8–9 (usually 9); pectoral-fin rays 18; relatively broad interorbital (75-91% pupil diameter); 10-12 papillae in posterior transverse interorbital row; the upper part of opercle with about 10-12 scales arranged in 3 or 4 transverse rows; pelvic without frenum. Colour when fresh is generally yellow (including iris, except opercle, upper part of cheek, and area

immediately behind eye sometimes pinkish); head, body, and fins covered with numerous pepper-like melanophores, most prominent on side of body; fins yellow, except pelvic fins translucent; second dorsal fin, caudal fin, and anal fin with blue margin, widest on anal fin; dorsal fins with narrow blue stripe at base, second dorsal fin also with longitudinal row of blue spots just above stripe; filamentous extension of second dorsal-fin spine blue (Ref. 118649).

Ease of Identification

Meristic characteristics of Priolepis billbrooksi

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 13 - 14
on upper limb 3 - 4
total 16 - 19
Vertebrae
preanal
total 26 - 26

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total 7 - 7
Soft-rays total 9 - 10
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total
Soft-rays total 8 - 9

Paired fins

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