Morphology Data of Schilbe grenfelli
Identification keys
Abnormalities
Main Ref. De Vos, L., 2007
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 compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Diagnosis: adipose fin present (Ref. 43912, 81643) and fully developed (Ref. 81643). Anterior nostrils closer to each other than the posterior pair; nasal barbel not reaching beyond the posterior border of the eye; inner side of pectoral spine weakly serrated; snout reaching beyond lower jaw; head rounded (Ref. 43912, 81643).

Description: mouth subterminal (Ref. 81643). 44-59 branched anal rays (Ref. 43912, 81643). 46-49 non fused vertebrae; 8-9 branchiostegal rays on one side of head; caudal peduncle always longer than deep; nasal barbel reaches at least to anterior border of eye and at maximum to posterior border of eye; maxillary and outer mandibular barbels at least reach to anterior border of opercle and at maximum to posterior border of opercle; inner mandibular barbels short and never reach beyond posterior eye border (Ref. 43912). Schilbe grenfelli belongs to the group of species with a uniform, silvery coloration, a rather small inferior mouth and the anterior nostrils closer to each other than are the posterior ones, as is also the case in S. banguelensis and S. mystus, but is easily distinguished from S. banguelensis by its short nasal barbel never reaching beyond the orbit and from S. mystus by the serrations on the inner side of the pectoral spines which are fine in S. grenfelli but coarse in S. mystus (Ref. 43912).

Coloration: in life: head and dorsum greyish brown, flanks often greyish silver with purple/iridescent reflections; ventrally, head and body whitish or silvery; pectoral, pelvic and anal fins yellowish basally, body of fins often grey and speckled (Ref. 43912, 81643). Preserved specimens: often uniformly pale brown (Ref. 43912, 81643).

Ease of Identification

Meristic characteristics of Schilbe grenfelli

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 8
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 7 - 11
on upper limb 2 - 4
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

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

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     1
Soft-rays   9 - 11
Pelvics Attributes  
Position    abdominal
Spines     
Soft-rays   6
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Musschoot, Tobias
Modified by Musschoot, Tobias
Comments & Corrections
Sign our Guest Book
Back to Search
cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17