Réf. Princ. | Paugy, D. and S.A. Schaefer, 2007 |
Ressemble à | |
Bones in OsteoBase |
Organes spécialisés | no special organs |
Apparence différente | always different morphology between mature adults |
Couleurs différentes | different colors in juveniles and adults |
Remarques | Very pronounced sexual dimorphism in male adults; anal fins curved instead of pointed (Ref. 2880, 81279). |
Éléments remarquables | none |
Profil du corps (shape guide) | fusiform / normal |
Section transverse | |
Profil dorsal de la tête | more or less straight |
Type d'yeux | more or less normal |
Type de bouche/museau | more or less normal |
Position de la bouche | terminal |
Type of scales | cycloid scales |
Diagnose |
Diagnosis: lateral line complete, 23-29 (Ref. 81279) or 26-29 (Ref. 80290) lateral line scales. Anal fin with 3 unbranched and 15-19 (Ref. 81279) or 16-19 (Ref. 80290) branched rays. 11-14 gill rakers on lower part of first branchial arch; 6/8 premaxillary teeth (Ref. 2880, 81279). Inner dentary teeth conical, monocuspid; scales of flank without melanophores concentrated along basal margin, pigment diffuse or absent (Ref. 80290). Fins colorless, at most, pinkish; caudal fin tinged with pink (Ref. 2880, 81279). Tip of dorsal fin usually blackish (Ref. 2880, 80290, 81279). Widely distributed, never found in Cavally River (Ref. 2880, 81279). Description: body slender; body depth 25-29% and head length 24-28% of SL (Ref. 80290). Body height 3.45-3.95x and head length 3.6-4x in SL (Ref. 42032). Mouth terminal, upper lip prominent, depth of lower jaw about 1.5 that of upper jaw; premaxilla with 3 teeth in outer row each bearing 5 cusps, 4 teeth in inner row each bearing 6-7 cusps; dentary with 4 teeth in outer row each bearing 5-7 cusps, median cusp prominent, a conical monocuspid tooth at symphysis posterior to outer row teeth; lateral line complete, 22-29 tubes, ultimate canal-bearing scale terminal (Ref. 80290). Very pronounced sexual dimorphism in male adults; anal fins curved instead of pointed (Ref. 2880, 81279). Coloration: body silvery with glossy, brilliant longitudinal band; caudal fin tinged with carmin-pink; usually black spot at dorsal-fin tip (usually absent in very small specimens); lateral band black and appears to be broader posteriorly when preserved in formalin (Ref. 2880, 81279). |
Facilité d'identification |
Lignes latérales | 1 Interrompu(e)(s): No |
Écailles sur la ligne latérale | 23 - 29 |
Écailles perforées de la ligne latérale | |
Écailles en série latérale | |
Rangées d'écailles au-dessus de la ligne latérale | 4.5 - 4.5 |
Rangées d'écailles au-dessus de la ligne latérale | 3.5 - 3.5 |
Écailles autour du pédoncule caudal | |
Barbillons | 0 |
Fentes branchiales (requins et raies uniquement) | |
Branchiospines | |
sur le membre inférieur | 11 - 14 |
sur le membre supérieur | |
Total | |
Vertèbres | |
préanal(e) | |
Total |
Attributs | no striking attributes |
Nombre de nageoires | 1 |
Nombre de pinnules | Dorsal |
Ventral | |
Total d'épines | |
Total de rayons mous | |
Nageoire adipeuse | present |
Attributs | forked; more or less normal |
Nombre de nageoires | 1 |
Total d'épines | 0 - 0 |
Total de rayons mous | 18 - 22 |
Pectorale(s) | Attributs more or less normal |
Épines | |
Rayons mous | |
Pelvienne(s) | Attributs more or less normal |
position abdominal behind origin of D1 | |
Épines | |
Rayons mous |