Classificação / Nomes
Nomes comuns | Sinônimos | Catalog of Fishes(Gênero, Espécies) | ITIS | CoL | WoRMS | Cloffa
>
Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: kayabi: The specific name kayabi is in reference to the name of an indigenous tribe (Tupi group) formerly inhabiting a vast region of the Teles Pires drainage, Tapajós river basin, central Brazil.
Eponymy: The Kayabi are a Tupí-speaking Indian nation that lived in the region of the rivers Arinos, dos Peixes and Teles Pires, Mato Grosso, Brazil. [...] (Ref. 128868), visit book page.
More on author: Costa.
Meio ambiente: milieu / Zona climática / intervalo de profundidade / faixa de distribuição
Ecologia
; Água doce bentopelágico; pH range: 5.7 - 6.0. Tropical
South America: middle and upper reaches of the Tapajós river basin in Brazil.
Tamanho / Peso / Idade
Maturidade: Lm ?  range ? - ? cm
Max length : 3.0 cm SL macho/indeterminado; (Ref. 76937); 2.9 cm SL (female)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Raios dorsais (total) : 8 - 10; Raios anais : 12 - 14; Vértebras: 30 - 31. Differs from all other species of the subgenus Melanorivulus by the possession of the following combination of characters: flank with red marks arranged in chevron-like pattern with vertex on the ventral part of the flank; pelvic fin usually with 6 rays, or sometimes 7 when including a rudimentary ray; scales in the longitudinal series 31-33; dorsal portion of the caudal fin in females with a horizontal series of white spots; pectoral fin with 13 rays; caudal fin with 28-31 rays; and flank in both sexes with conspicuous red bars (Ref. 76937).
Body shape (shape guide): elongated.
Inhabits shallow portions of streams and swamps, usually about 0.10-0.30 m deep, with clear water (Ref. 76937).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Costa, W.J.E.M., 2007. Rivulus kayabi, a new killifish from the Tapajós river basin, southern Brazilian Amazon (Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwat. 18(4):345-350. (Ref. 76937)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2025-2 (Global))
Ameaça para os humanos
Harmless
Uso pelos humanos
Pescarias: pesca de subsistência
Ferramentas
Relatórios especiais
Baixar XML
Fontes da internet
Estimativas baseadas em modelos
Índice de diversidade filogenética (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.00661 (0.00312 - 0.01398), b=3.10 (2.92 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Nível Trófico (Ref. 69278) |
3.1 ±0.4 se; based on size and trophs of closest relatives |
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). 🛈 |