";} } ?> Morphology Summary - Schilbe bocagii
Morphology Data of Schilbe bocagii
Identification keys
Abnormalities
Main Ref. De Vos, L., 1995
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 fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Diagnosis: adipose fin always present; head rounded to more or less rectangular; posterior nostrils closer to each other than are the anterior ones; lower jaw shorter, reaching as far as or slightly beyond upper jaw; eye position variable, eye center situated at level of mouth corner or just above it; inner side of pectoral spines feebly serrated; dorsal spine 11-13.4% SL, pectoral pine 10.4-16% SL; 43-53 branched anal fin rays; 41-45 non-fused vertebrae; 10-17 gill rakers on lower part of anterior arch (Ref. 43912).

Description: 8-10 branchiostegal rays on each side of head; caudal peduncle somewhat shorter than deep, as long as deep, or slightly longer than deep (Ref. 43912). This species resembles S. angolensis, but can easily be distinguished by the longer pectoral and dorsal spines in the latter (dorsal spine 15,4% SL and pectoral spine 16,7% SL in S. angolensis against 11-13,4% SL and 10,4-16% SL in S. bocagii) and by the higher number of vertebrae (47 non-fused vertebrae in S. angolensis versus 41 -45 in S. bocagii); moreover, the head of S. angolensis is much narrower; S. bocagii also resembles S. multitaeniatus but this latter species shows another coloration pattern and different meristic counts (Ref. 43912).

Coloration: in alcohol: light brown above, lateral and ventral sides paler; silvery white tinge along lateral line and above anal fin; base of caudal fin brown; anal fin with an inconspicuous median longitudinal streak on its entire length; large dark blotch above pectoral fin where swimming-bladder comes close under skin (Ref. 43912).

Ease of Identification

Meristic characteristics of Schilbe bocagii

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 10 - 17
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   0
Ventral  0
Spines total 1
Soft-rays total
Adipose fin present

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     1
Soft-rays   9 - 10
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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