Ref. principal | Smith-Vaniz, W.F., 1999 |
Aparência se refere a | macho; fêmea |
Bones in OsteoBase |
órgãos especializados | |
Aparência diferente | |
Cores diferentes | different colors during breeding season only |
Notas | Courtship sometimes observed (usually at dusk) with pairs swimming together, the male assuming black color (Ref. 90102). |
Características determinantes | |
Forma lateral do corpo | fusiform / normal |
Seção transversal | compressed |
Perfil dorsal da cabeça | more or less straight |
Tipo de olhos | eyes with fixed fatty (adipose) tissue/eyelids |
Tipo de boca/focinho | more or less normal |
Posição da boca | terminal |
Type of scales | cycloid scales |
Diagnose |
This species is distinguished by the following characters: dorsal profile moderately convex anteriorly; adipose eyelid well developed, moderate anteriorly, posterior eyelid extends onto eye to rear border of pupil; gill rakers (including rudiments) 6-8 + 15-19 = 21-25; straight part of lateral line with 0-3 anterior scales followed by 27-36 strong, dark scutes; breast completely scaly; vertebrae 10+15; upper jaw with outer row of strong canines widely spaced in adults, and an inner band of small villiform teeth, widest at symphysis; on lower limb of first gill arch jaw with a single row of strong conical teeth widely spaced in adults. Colour in life with adults' head and body silvery olive to iridescent blue-green above, silvery olive to whitish below; small blackish spot, much smaller than pupil diameter, at upper angle of opercle (this spot evident on specimens of about 14 cm fork length); second dorsal fin olive to blackish, the lobe with a white tip (white tip becomes more obvious with increasing size) (Ref. 9894). Description: Anal and caudal fins yellowish to black; body oblong and compressed; ventral profile slightly convex; pectoral fins falcate; anal fin with 2 detached spines (Ref. 2334, 90102). |
Facilidade de Identificação |
Linhas laterais | 1 Interrompido(a): No |
Escamas na linha lateral | 0 - 3 |
Escamas da linha lateral com poros | |
Escamas em séries laterais | |
Fileiras de escamas acima da linha lateral | |
Fileiras de escamas abaixo da linha lateral | |
Escamas em torno do pedúnculo caudal | |
Barbilhões | 0 |
Aberturas branquiais (tubarões/raias apenas) | |
Rastros branquiais | |
no membro inferior | 15 - 19 |
no membro superior | 6 - 8 |
total | 21 - 27 |
Vértebras | |
Pré-anal | 10 - 10 |
total | 25 - 25 |
Atributos | no striking attributes |
Número de nadadeiras | 2 |
Nro. de pínulas | Dorsal |
Ventral | |
Total de espinhos | 9 - 9 |
Total de raios | 19 - 22 |
Nadadeira adiposa | absent |
Atributos | forked; more or less normal |
Número de nadadeiras | 2 |
Total de espinhos | 3 - 3 |
Total de raios | 14 - 17 |
Peitoral | Atributos more or less normal |
espinhos | |
raios | |
Pélvicas | Atributos more or less normal |
Posição thoracic before origin of D1 | |
espinhos | |
raios |