Morphology Data of Paracheilinus nursalim
Identification keys
Main Ref. Allen, G.R. and M.W. Erdmann, 2008
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

This species is distinguished by the following set of characters: pored lateral-line scales 11-16+3-10, often 16+5-7; gill rakers usually 12-13 (sometimes 14-15); body depth 2.9-3.5 in SL; often, 4-6 (rarely 3) dorsal soft rays of males prolonged as narrow, tapering filaments that are erected during courtship; in males, caudal fin strongly lunate, the length 1.6 (1.7-2.4) in SL and caudal concavity 0.8-1.5 in HL; pelvic fins 1.6-1.8 in males and 2.0-2.2 in females, both in HL; live colour of male differs from all other Paracheilinus in having a pair of rectangular blackish patches, one on ventral half of caudal peduncle and adjacent body, and the other, often less distinct, on upper back, below middle of spinous dorsal fin. Similar to P. cyaneus in general appearance; sympatric throughout its known range (Misool, Fak Fak Peninsula, and Triton Bay area). The two species are easily distinguished on the basis of male coloration, particularly that associated with courtship displays (Ref. 74967).

Ease of Identification

Meristic characteristics of Paracheilinus nursalim

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 2 - 2
Scale rows below lateral line 6 - 6
Scales around caudal peduncle 15 - 16
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 12 - 15


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total 8 - 9
Soft-rays total 11 - 11
Adipose fin

Caudal fin


Anal fin(s)

Fins number
Spines total 3 - 3
Soft-rays total 8 - 10

Paired fins

Pectoral Attributes  
Soft-rays   14 - 15
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
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