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> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Rivulidae (Rivulines) > Cynolebiinae
Etymology: Nematolebias:Greek, nema, -atos = filament + Greek, lebias, ou = a kind of small fish (Ref. 45335); papilliferus:Named for the hypertrophied contact organs of the pectoral fin of male; an adjective. More on author: Costa.
Ambiente: milieu / zona climática / intervalo de profundidade / gama de distribuição Ecologia
South America: Laguna de Maricá and Laguna de Saquarema basins in Brazil.
Tamanho / Peso / Idade
Maturidade: Lm? range ? - ? cm Max length : 7.0 cm SL macho/indeterminado; (Ref. 36579)
Descrição breve Chaves de identificação | Morfologia | Morfometria
Espinhos dorsais (total) : 0; Raios dorsais moles (total) : 13 - 18; Espinhos anais: 0; Raios anais moles: 19 - 24; Vértebras: 31. Having greenish golden vertical lines on body side and vertical golden lines on dorsal fin . Dorsal head profile slightly convex to nearly straight in male, gently concave to approximately straight in female (Ref. 42934). Body shape (shape guide): elongated.
Found in small freshwater temporary pools, 10-40 m of diameter, about 50 cm deep, in floodplains of streams and lagoons or along the vast floodplains of lower rio São João, which are sometimes close to the sea (about 100 m). Substrate of compact, soft reddish brown mud; water hyaline, yellow or dark orange brown, usually not turbid. These pools are dry twice a year, once during winter, usually from July to August, and again during summer, usually from February to March. During dry season, all fish die and eggs undergo in diapause within the substrate. Eclosion happens at the onset of wet season, usually March-April and September-October (Ref. 42934).
Ciclo de vida e comportamento de acasalamento Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Males are territorial and very aggressive. Males display an elaborate courtship behavior beginning with waving lateral movement in front of female, with the unpaired fins completely opened. In an oblique position, the male touches the bottom surface with the anterior portion of its head, with vibrating body. The female placed her body side to side with the male. Then both couple dives into the substrates where spawning takes place (Ref. 42934).
Costa, W.J.E.M., 2002. The neotropical seasonal fish genus Nematolebias (Cyprinodontiformes: Rivulidae: Cynolebiatinae): taxonomic revision with description of a new species. Ichthyol. Explor. Freshwat. 13(1):41-52. (Ref. 42934)
Categoria na Lista Vermelha da IUCN (Ref. 130435: Version 2025-2 (Global))
Dinâmica das populações Parâmetros de crescimento Idades / tamanhos máximos Comprimento-peso rel. Comprimento-comprimento rel. Frequência de comprimento Conversão de massa Recrutamento Abundância
Ciclo de vida Reprodução Maturidade Maturidade/Rel. das guelras Fecundidade Desova Agregações de desova Ovos Desenvolvimento dos ovos Larvas Dinâmica larvar
Fisiologia Composição corporal Nutrientes Consumo de oxigénio Tipo de natação Velocidade de natação Pigmentos visuais Som de peixe Doenças e Parasitas Toxicidade (LC50s)
Índice de diversidade filogenética (Ref. 82804): PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00266 - 0.01427), b=3.13 (2.93 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Nível Trófico (Ref. 69278): 3.3 ±0.38 se; based on food items.
Resiliência (Ref. 120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Vulnerabilidade da pesca (Ref. 59153): Low vulnerability (10 of 100). 🛈
