Morphology Data of Chromidotilapia guntheri
Identification keys
Abnormalities
Main Ref. Stiassny, M.L.J., A. Lamboj, D. De Weirdt and G.G. Teugels, 2008
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Sexual dimorphism well-developed; males usually 10-20% larger than females, with dorsal, anal and pelvic rays more elongated (Ref. 81260).

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
Diagnosis

Diagnosis: 21-24 rakers on first gill arch; when stressed with two continuous dark bands on body; 1st dorsal fin spine 30-35% length of fifth spine; caudal fin truncate to subtruncate; dorsal head profile straight; iris yellow to brownish, posterior half sometimes red; upper lip white or pale blue; anterior 2-3 dorsal fin spines with black interspinous membrane in juveniles (Ref. 81260).

Description: relatively robust when adult (body depth 34.2-39.2%, mean 36.1% SL); snout long; predorsal profile rises steeply over eyes, smoothly convex to dorsal fin origin; caudal peduncle usually deeper than long; hypobranchial and ceratobranchial rakers markedly tuberculate, epibranchial rakers lanceolate; some dorsal and anal fin rays elongated; caudal subtruncate in adults of both sexes (Ref. 81260).

Coloration: similar to C. g. guntheri, but often with more pronounced maculation of the dorsal fin membrane (Ref. 81260).

Ease of Identification

Meristic characteristics of Chromidotilapia guntheri

Lateral Lines Interrupted: No
Scales on lateral line 27 - 29
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
on upper limb
total 21 - 24
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   0
Ventral  0
Spines total 15 - 16
Soft-rays total 9 - 10
Adipose fin absent

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 7 - 8

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   
Pelvics Attributes  
Position    
Spines     
Soft-rays   
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