Morphology Data of Pomacentrus nigriradiatus
Identification keys
Abnormalities
Main Ref. Allen, G.R., M.V. Erdmann and P.D. Pertiwi, 2017
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 short and / or deep
Cross section compressed
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 XIII,14-15; A II,14-15; pectoral-fin rays usually 17-18 (rarely 17); tubed lateral-line scales 17-19 (rarely 19); total gill rakers on first arch 22-24 (rarely 22); body depth 2.0-2.2 in SL; a patch of scales usually present on preorbital and a single row of scales on suborbital, continuing around posterior margin of eye; color in life generally gray to gray brown with thick black or dark-brown scale margins producing a network pattern; a black spot covers entire pectoral-fin base; inner side of pectoral-fin axil tannish to pale gray; median fins dark gray with translucent portion posteriorly showing conspicuous contrasting blackish rays; dorsal scleral surface of eye either uniform grayish or with a few blue markings. This species differs from other members of the philippinus species complex by the distinct color pattern features, particularly the obvious contrasting dark fin rays on the posterior sections of the dorsal, anal, and caudal fins; also differs from P. albiaxillaris, P. flavoaxillaris, and P. magniseptus in usually having at least a few scales on the preorbital (lacking in three of the many type specimens) (Ref, 114927).

Ease of Identification

Meristic characteristics of Pomacentrus nigriradiatus

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales 17 - 19
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 - 17
on upper limb 6 - 8
total 22 - 24
Vertebrae
preanal
total 26 - 26

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 13 - 13
Soft-rays total 14 - 15
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 2 - 2
Soft-rays total 14 - 15

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   17 - 18
Pelvics Attributes  
Position    
Spines     1
Soft-rays   5 - 5
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