Morphology Data of Placidochromis fuscus
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
Cross section
Dorsal head profile clearly convex
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Diagnosis: head length 33.3-34.8 %SL; head width 40.5-42.9 % head length; snout length 30.2-30.8 % head length; lower jaw length 37.3-39.2 % head length; outer oral dentition well developed bicuspid; gape inclined at about 10-15° to horizontal; premaxillary pedicel length 21.5-24.2 % head length; cheek depth 20.4-21.9 % head length; eye diameter 36.4-37.3 % head length; predorsal distance 36.6-38.6 %SL; body depth 36.6-39.2 %SL (Ref. 55898).

Description: dorsal body profile more strongly convex than ventral body profile; dorsal snout profile straight; snout pointed; maxilla extending just beyond vertical at anterior margin of eye; outer oral teeth mainly bicuspid, some tricuspid teeth present; inner oral teeth tricuspid; 2-3 series of scales on cheek; upper margin of eye touching dorsal head profile; lower pharyngeal jaw slender; all pharyngeal teeth small, slender and densely packed; gill-rakers on lower limb short (Ref. 55898).

Coloration: Preserved: Females and immature males: body pale brownish yellow; 7 vertical bars below dorsal fin; dorsal fin grey; darker grey spots on soft dorsal; caudal fin pale; anal and ventral fins with dark grey leading edge (Ref. 55898). Mature males: body darker; snout and chin dark brown; dorsal fin grey, with thin dark grey submarginal band and white tips; caudal fin with dark edge ventrally; anal and ventral fins dark grey with black leading edges (Ref. 55898).

Ease of Identification

Meristic characteristics of Placidochromis fuscus

Lateral Lines Interrupted: No
Scales on lateral line 33 - 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 - 12
on upper limb 3 - 4
total 16 - 17
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 16 - 17
Soft-rays total 9 - 10
Adipose fin absent

Caudal fin

Attributes

Anal fin(s)

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

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   14 - 14
Pelvics Attributes  
Position    
Spines     
Soft-rays   
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