Morphology Data of Raiamas senegalensis
Identification keys
Main Ref. De Weirdt, D., A. Getahun, S. Tshibwabwa and G.G. Teugels, 2007
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance males alike females
Different colors males alike females

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral elongated
Cross section compressed
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales cycloid scales

Diagnosis: body depth 3.9-6.2x and head length 3.4-4.7x SL; eye diameter 3.1-4.9x head length (Ref. 2940, 81282). Scale formula 9.5-11.5/48-64/4.5-6.5; 14-16 scales around caudal peduncle; 8 dorsal-fin branched rays; 13-15 anal-fin branched rays (Ref. 2940, 81282, 81639). Usually less than 15 vertical bars on sides; known from the large Nilo-Sudanese basins (Ref. 2940, 81282). Round spot on caudal peduncle (Ref. 81639).

Description: mouth terminal, without barbels; scales with divergent striae; dorsal fin falciform, originating in advance of anal fin; caudal fin forked (Ref. 81639). D: III,8; A: III,13-15; P: 14-16; V: I,8 (Ref. 2940, 81282, 81639). Gill rakers short (Ref. 2940, 81282).

Coloration: live specimens silvery with greyish green back; sides marked with 12-15 black vertical bars becoming progressively lower posteriorly (Ref. 2940, 81282, 81639). Intermediate spots or bars may be present in anterior part of body; orange-colored fins in life (Ref. 2940, 81282).

Ease of Identification

Meristic characteristics of Raiamas senegalensis

Lateral Lines 1 Interrupted: No
Scales on lateral line 48 - 64
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 9 - 12
Scale rows below lateral line 4 - 7
Scales around caudal peduncle 14 - 16
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 4 - 8
on upper limb


Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Spines total 0 - 0
Soft-rays total 11 - 11
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 16 - 18

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   14 - 16
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Spines     0
Soft-rays   9 - 9
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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