Morphology Data of Placidochromis longirostris
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 more or less straight
Type of eyes more or less normal
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Diagnosis: snout extremely long, 39.8-43.2 % head length; lachrymal deep, 27.9-29.3 % head length; eye small, 26.4-28.5 % head length (Ref. 55898).

Description: large and relatively deep-bodied; dorsal body profile strongly convex; head large; dorsal head profile slightly convex in larger specimens; snout very long; mouth very small; lips thick and fleshy; gape inclined at about 25° to horizontal; maxilla extending a little further than halfway between tip of snout and vertical at anterior margin of orbit; outer oral teeth bicuspid, a few unicuspid teeth posteriorly; inner oral teeth tricuspid; 2-3 series of scales on cheek; eye small; lower pharyngeal jaw normal in shape; all pharyngeal teeth small, slender and densely packed; gill-rakers on lower limb short (Ref. 55898).

Coloration: Preserved: body very pale brownish yellow; 7 faint vertical bars below dorsal fin; dorsal fin grey, sometimes with narrow dark submarginal band and white tips; anal fin grey (Ref. 55898). Mature males: dark nape, snout and chin; belly pale; dorsum dark; dorsal fin with dark grey to black submarginal band and white tips; soft dorsal spotted; anal and caudal fins grey; ventral fin with dark leading edge (Ref. 55898).

Ease of Identification

Meristic characteristics of Placidochromis longirostris

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 15 - 17
on upper limb 4 - 6
total 20 - 23
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 15 - 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 - 9

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   15 - 16
Pelvics Attributes  
Position    
Spines     
Soft-rays   
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