>
Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypostominae
Etymology: Guyanancistrus: Composed from Guyana + see under Ancistrus.
More on authors: Heitmans, Nijssen & Isbrücker.
Taxonomic Remarks
See Le Bail et al. (2000:236, fig.) for complementary description with biological observations and geographical distribution; 12S and 16S mitochondrial rRNA gene sequences used in a molecular phylogeny of Loricariidae by Montoya-Burgos et al. (1998: figs. 3,4,6 as Lasiancistrus niger).
Meio ambiente: milieu / Zona climática / intervalo de profundidade / faixa de distribuição
Ecologia
; Água doce demersal. Tropical
South America: Atlantic coastal drainages of the Guianas, from Nickerie to Oyapock River basins.
Tamanho / Peso / Idade
Maturidade: Lm ?  range ? - ? cm
Max length : 14.2 cm SL macho/indeterminado; (Ref. 36713)
The most ubiquitous, frequently occurring and abundant species of this genus. Occurs in all kinds of streams where the substrate is rocky and the water is flowing (Ref. 35381). Found in great numbers in zones of plunging waters (Ref. 27188). May be found together with Lithoxus in little forest creeks as well as in rapids (Ref. 35381).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Silva, G.S.C., F.F. Roxo and C. Oliveira, 2015. Two new species of Pseudancistrus (Siluriformes: Loricariidae) from the Amazon basin, northern Brazil. ZooKeys 482:21-34. (Ref. 99871)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2025-2 (Global))
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
Baixar XML
Fontes da internet
Estimativas baseadas em modelos
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01660 (0.00919 - 0.02998), b=3.01 (2.86 - 3.16), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Resiliência (Ref.
120179): médio(a), tempo mínimo de duplicação da população 1,4 - 4,4 anos (Preliminary K or Fecundity.).
Vulnerabilidade da pesca (Ref.
59153): Low vulnerability (10 of 100).
🛈