Morphology Data of Placidochromis argyrogaster
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 short and / or deep
Cross section
Dorsal head profile clearly convex
Type of eyes more or less normal
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Diagnosis: lachrymal depth 24.6-27.2 % head length (Ref. 55898).

Description: relatively deep-bodied; dorsal body profile strongly convex; ventral body profile almost flat; dorsal head profile slightly convex; snout profile straight; snout relatively long and pointed; cheek deep; mouth large; gape almost horizontal; ventral profile of lower jaw inclined at about 20° to horizontal; maxilla extending to vertical at anterior margin of eye; outer oral teeth small, long, slender unicuspid or sometimes shouldered bicuspid; inner oral teeth small, unicuspid or shouldered bicuspid; 2-3 series of scales on cheek; eye normal; upper margin of eye not touching dorsal head profile; lower pharyngeal jaw stout; central pharyngeal teeth enlarged, molariform; gill-rakers on lower limb slender, some branched (Ref. 55898).

Coloration: Preserved: Females and immature males: body pale brownish yellow; vertical bars absent or very pale; snout brown; dorsal fin pale grey with faint white submarginal band and grey tips; soft dorsal with grey oblique bands; caudal and anal fins pale; ventral fin with grey leading edge (Ref. 55898). Mature males: 7 dark vertical bars below dorsal fin; nape, snout and chin dark grey to black; dorsal fin grey with dark grey tips; soft dorsal dark grey without markings; caudal fin dark grey; anal and ventral fins with dark leading edge (Ref. 55898).

Ease of Identification

Meristic characteristics of Placidochromis argyrogaster

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 - 12
on upper limb 4 - 5
total 16 - 18
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 15 - 16
Soft-rays total 10 - 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   15 - 15
Pelvics Attributes  
Position    
Spines     
Soft-rays   
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