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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Cynolebiinae
Etymology: Spectrolebias: Latin, spectrum = imagen of a thing, apparition + Greek, lebias, ou = a kind of small fish (Ref. 45335); brousseaui: Named for Roger D. Brousseau, the person who discovered the species.
Eponymy: Dr Roger D Brousseau is a Californian aquarist and killifish hobbyist. [...] (Ref. 128868), visit book page.
Ambiente: milieu / zona climática / intervalo de profundidade / gama de distribuição
Ecologia
; Água doce pelágico(a,os,as); intervalo de profundidade 0 - 1 m (Ref. 93219). Tropical
South America: Bolivia.
Tamanho / Peso / Idade
Maturidade: Lm ?  range ? - ? cm
Max length : 3.2 cm SL macho/indeterminado; (Ref. 93219); 3.5 cm SL (female)
Descrição breve
Chaves de identificação | Morfologia | Morfometria
This species differs from its congeners by having a unique color pattern of males: anterior third of body light brown, posterior two-thirds of body dark blue, almost black dorsal region, with rows of bright blue spots, relatively large size, with about half the diameter of the pupil. It differs from all its congeners, except S. filamentosus, by having pelvic-fin bases separated by an interspaced (vs. pelvic-fin bases in contact), tip of dorsal and anal fins in males with long filamentous rays (vs. absence of filaments, or presents only on dorsal fin in S. semiocellatus and S. inaequipinnatus, or presents only on anal fin in S. chacoensis), and presence (vs. absence) of contact organs on scales of flank in males (Ref. 93219).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
The locality where the species occurs lies at the plateau area (316 m.a.s.l.), just southwest of Llanos de Mojos, which occupy much of the río Mamoré basin. Water temperature at the surface of the pool was 31ºC, at 1 meter depth was 22ºC, and at the marginal area of the pool, at 15 cm depth, was 35ºC. Only small specimens of Trigonectes sp. were collected syntopically in marginal areas, while specimens of Simpsonichthys brousseaui were collected in the deepest areas, at about 1 m deep. The pool has dark water, pH 6.8 and water hardness 80 ppm (Ref. 93219).
Ciclo de vida e comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Nielsen, D.T.B., 2013. Spectrolebias brousseaui (Cyprinodontiformes: Rivulidae: Cynolebiatinae), a new annual fish from the upper río Mamoré basin, Bolivia. Neotrop. Ichthyol. 11(1):81-84. (Ref. 93219)
Categoria na Lista Vermelha da IUCN (Ref. 130435: Version 2025-2 (Global))
Ameaça para o homem
Harmless
Utilização humana
Pescarias: sem interesse
Ferramentas
Relatórios especiais
Descarregue XML
Fontes da internet
Estimativas baseadas em modelos
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this 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).
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