Morphology Data of Oreochromis placidus
Identification keys
Abnormalities
Main Ref. Trewavas, E., 1983
Appearance refers to Male; Female
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance different morphology during breeding season only
Different colors different colors in mature adults only
Remarks

Descriptive characteristics of juvenile and adult

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

Females with 1-3 small blotches mid-laterally; male darker with traces of vertical bars emphasized in a diamond shape mid-laterally; snout and throat dark; dark flecks on postorbital and occipital lateral line openings; a few spots on soft dorsal; margin of dorsal white; caudal immaculate.

Ease of Identification

Meristic characteristics of Oreochromis placidus

Lateral Lines Interrupted: No
Scales on lateral line 30 - 32
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 3 - 4
Scale rows below lateral line 0 - 0
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only) absent
Gill rakers
on lower limb 16 - 18
on upper limb
total
Vertebrae
preanal
total 29 - 30

Fins

Dorsal fin(s)

Attributes extending over most of the back length
Fins number 1
Finlets No. Dorsal   0
Ventral  0
Spines total 17 - 19
Soft-rays total 9 - 11
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 4 - 4
Soft-rays total 8 - 10

Paired fins

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