Morphology Data of Chromis sahulensis
Identification keys
Abnormalities
Main Ref. Allen, G.R. and M.G. Allen, 2021
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 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 set of characters: D XIII,10-13 (usually XIII,12); A II,9-11 (usually II,10); pectoral-fin rays 17-20 (usually 18-19); spiniform caudal-fin rays 2; tubed lateral-line scales 17-19 (rarely 17); total gill rakers on first branchial arch 29-34 (usually 31-32); body depth 2.1-2.4 (mean 2.2) in SL. Colouration: in life yellowish brown on dorsal head, nape, spinous dorsal fin, and back, grading to gray-brown on sides, with a prominent saddle-like white spot near the base of last dorsal-fin rays extending onto upper caudal peduncle; brownish bands edged with white along the upper and lower margins of caudal fin (Ref. 125611).

Ease of Identification

Meristic characteristics of Chromis sahulensis

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 20 - 23
on upper limb 9 - 11
total 29 - 34
Vertebrae
preanal 11 - 11
total 26 - 26

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 13 - 13
Soft-rays total 10 - 13
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 2 - 2
Soft-rays total 9 - 11

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   17 - 20
Pelvics Attributes  
Position    
Spines     1
Soft-rays   5 - 5
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