Morphology Data of Placidochromis rotundifrons
Identification keys
Abnormalities
Main Ref. Hanssens, M., 2004
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 elongated
Cross section
Dorsal head profile clearly convex
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Diagnosis: head length 32.8-33.6 %SL; snout length 27.3-29.8 % head length; lower jaw length 34.9-37.1 % head length; outer oral dentition well developed bicuspid; cheek depth 17.9-20.5 % head length; interorbital width 17.2-19.5 % head length; eye diameter 39.5-41.0 % head length; body depth 31.3-24.2 %SL (Ref. 55898).

Description: dorsal body profile convex; ventral body profile almost straight; head small; snout short and steep; mouth small; gape inclined at about 15° to horizontal; maxilla extending to beyond vertical at anterior margin of eye; outer oral teeth bicuspid, becoming unicuspid posteriorly; inner oral teeth tricuspid; cheek shallow; 1-2 series of scales on cheek; lower pharyngeal jaw normal; a few central pharyngeal teeth enlarged but not molariform; eye large; upper margin of eye not touching dorsal head profile; gill-rakers on lower limb short (Ref. 55898).

Coloration: Preserved: Females and immature males: body pale brownish yellow; 6-7 faint vertical bars below dorsal fin, only visible on dorsal part of body; dorsal fin pale grey with grey tips; caudal fin pale grey with grey trailing edge; all other fins pale (Ref. 55898). Mature males: body darker; snout, chin and belly dark; dorsal fin grey, with dark grey submarginal band and white lappets and tips; broad grey oblique bands on soft dorsal; caudal grey with black trailing, upper and lower edges; anal and ventral fins with black leading edges (Ref. 55898).

Ease of Identification

Meristic characteristics of Placidochromis rotundifrons

Lateral Lines Interrupted: No
Scales on lateral line 32 - 33
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle 16 - 16
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 11 - 11
on upper limb 3 - 4
total 15 - 16
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 14 - 15
Soft-rays total 9 - 11
Adipose fin absent

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 8 - 9

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   13 - 15
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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