Morphology Data of Orthochromis polyacanthus
Identification keys
Abnormalities
Main Ref. De Vos, L. and L. Seegers, 1998
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
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Description: frontal profile steep, with a small interruption at about height of eye; upper parts of head slightly rounded; lower jaw somewhat shorter than upper jaw; caudal fin slightly rounded to subtruncate (Ref. 52307) Cheek squamation variable, a scaleless area anteroventrally; chest squamation, minute and deeply embedded scales, sometimes with bilaterally scaleless area; nape-nuchal scales visible, larger than those found on the ventral surface of the belly (Ref. 26626).

Coloration: Living coloration unknown (Ref. 52307). Preserved specimens: brownish to olive; pale dots in dorsal and anal fins; caudal fin with

dark upper and lower edges and several thin, dark

vertical bars (Ref. 52307).

Ease of Identification

Meristic characteristics of Orthochromis polyacanthus

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales 33 - 34
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 8 - 10
Vertebrae
preanal
total 31 - 32

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   0
Ventral  0
Spines total 18 - 19
Soft-rays total 9 - 9
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

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

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   14 - 15
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Comments & Corrections
Back to Search
cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17