Ref. principal | Keith, P. and J. Allardi (coords.), 2001 |
Aparência se refere a | macho; fêmea |
Bones in OsteoBase | Skull, Spine |
órgãos especializados | different shape of head (f,m) |
Aparência diferente | different morphology during breeding season only |
Cores diferentes | different colors during breeding season only |
Notas |
Características determinantes | none |
Forma lateral do corpo | fusiform / normal |
Seção transversal | oval |
Perfil dorsal da cabeça | more or less straight |
Tipo de olhos | more or less normal |
Tipo de boca/focinho | more or less normal |
Posição da boca | terminal |
Type of scales | cycloid scales |
Diagnose |
Distinguished from congeners by having the following unique characters: 10-13 scales between end of adipose base and lateral line; 17-24 gill rakers (Ref. 59043); caudal fin deeply forked in individuals smaller than 20 cm SL; hyaline or grey adipose margin; posterior part of vomer toothless (Ref. 59043). Mouth extends only to area below rear of eye and has well developed teeth (Ref. 51442). Vomerine teeth weak (Ref. 7251). Caudal fin with 19 rays (Ref. 2196). Little scales (Ref. 51442). Juveniles have 8-12 blue-violet spots on the flanks with little red spots in-between (Ref. 51442). Adults at sea are bluish-green dorsally becoming silvery along the sides and white ventrally; with a few black spots but none under lateral line (Ref. 37032, Ref. 51442). Caudal fin usually unspotted and adipose fin not black bordered. During reproduction individuals lose the silvery shine and become dull brown or yellowish. Males may be mottled with red or have large black patches (Refs. 37032, 51442, 88171). Skin becomes thick and leathery. Survivors lose their spawning coloration and are generally dark in colour (Ref. 84357). During the spawning season, males are characterized by elongated hooked jaws that meet at the tips, thicker fins, and slime covering their body. Hook of males dwindle after spawning (Ref. 35388). |
Facilidade de Identificação |
Linhas laterais | 1 Interrompido(a): No |
Escamas na linha lateral | 109 - 131 |
Escamas da linha lateral com poros | |
Escamas em séries laterais | |
Fileiras de escamas acima da linha lateral | 22 - 26 |
Fileiras de escamas abaixo da linha lateral | 18 - 23 |
Escamas em torno do pedúnculo caudal | |
Barbilhões | 0 |
Aberturas branquiais (tubarões/raias apenas) | absent |
Rastros branquiais | |
no membro inferior | |
no membro superior | |
total | 20 - 22 |
Vértebras | |
Pré-anal | |
total | 58 - 61 |
Atributos | no striking attributes |
Número de nadadeiras | 1 |
Nro. de pínulas | Dorsal 0 - 0 |
Ventral 0 - 0 | |
Total de espinhos | 3 - 4 |
Total de raios | 9 - 15 |
Nadadeira adiposa | present |
Atributos | forked; more or less normal |
Número de nadadeiras | 1 |
Total de espinhos | 3 - 4 |
Total de raios | 7 - 11 |
Peitoral | Atributos more or less normal |
espinhos 1 | |
raios 11 - 16 | |
Pélvicas | Atributos more or less normal |
Posição abdominal behind origin of D1 | |
espinhos 2 | |
raios 8 - 10 |