Morphology Data of Pycnochromis iomelas
Identification keys
Abnormalities
Main Ref. Allen, G.R., 1975
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral short and / or deep
Cross section compressed
Dorsal head profile clearly convex
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales ctenoid scales
Diagnosis

Description: Body and adjacent dorsal and anal fins color is dark brown from snout to about the 4th dorsal-fin spine, then white to the caudal fin. Body short and deep (Ref. 4966). Body depth 1.8-1.9 in SL (Ref. 90102). This species differs from both C. fieldi and C. dimidiata by having 13 or 14 dorsal soft rays compared to modally 12 dorsal rays, the demarcation of dark brown anterior and white posterior colors anterior to the origin of the anal fin (the pectoral-fin tips passing distinctly posterior to the demarcation), and the genetic differentiation is distinct at mtDNA (Ref. 92902).

Ease of Identification

Meristic characteristics of Pycnochromis iomelas

Lateral Lines 1 Interrupted: No
Scales on lateral line
Pored lateral line scales 15
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 26 - 27
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 12 - 12
Soft-rays total 13 - 14
Adipose fin absent

Caudal fin

Attributes forked; with dorsal and ventral filament

Anal fin(s)

Fins number 1
Spines total 2 - 2
Soft-rays total 13 - 14

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   17 - 17
Pelvics Attributes  more or less normal
Position    thoracic  beneath origin of D1
Spines     
Soft-rays   
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