#Von rio tetra plus#

Its habitats tend to contain clear, transparent to brownish water and sandy substrates. Habitatĭisplays a preference for small, shallow (< 50 cm depth), slowly-flowing tributary streams where aquatic or otherwise submerged vegetation proliferates, although it has also been collected from marginal zones of the upper rio Tietê main channel. Type locality is ‘Rio de Janeiro, Brazil’. As a result, it has been included in the Brazilian list of threatened fish species since 2004. flammeus is now uncommon or even extinct across much of its putative natural range, and in Rio de Janeiro state only a handful of highly-fragmented populations remain at best, with the most recent confirmed record dating from 1992. Its native rivers flow through one of the most densely-populated and industrialised parts of Brazil, and have suffered greatly from dam construction, water abstraction, pollution, introduced species (including over 40 exotic freshwater fishes in the rio Paraíba do Sul alone), and other forms of anthropogenic degradation. Molecular analysis is required in order to resolve this confusion. (2014) hypothesise that the species has in fact been introduced around the city of São Paulo by aquarists or commercial breeders since it was not recorded in the area prior to 1977, the city is a centre for the ornamental trade, and it appears to be restricted to partially degraded habitats within the metropolitan zone, being absent from nearby, pristine natural areas. flammeus does not occur in the upper Paraíba do Sul, meaning there is a gap of several hundred kilometers between the Rio de Janeiro and São Paulo populations.Ĭarvalho et al. Although they share a number of native fish species, H. The headwaters of the Tietê and Paraíba do Sul are located close to each other in São Paulo state, and they may once have been connected with both draining the Serra do Mar mountains. In São Paulo there exist records from the upper rio Tietê, a tributary within the upper rio Paraná system, with populations concentrated in metropolitan areas east and west of São Paulo city, between the municipalities of Suzano and Salesópolis, and around Itapecerica da Serra, respectively. In Rio de Janeiro it is known only from coastal systems including rivers draining into Guanabara Bay, the middle rio Paraíba do Sul, and the rio Guandu.

Restricted to the neighbouring states of Rio de Janeiro and São Paulo in southwestern Brazil, although its current distribution is somewhat uncertain. Order: Characiformes Family: Characidae Distribution

#Von rio tetra plus#

Hyphessobrycon: from the Ancient Greek υπελάσσων (hyphesson), meaning ‘of lesser stature’, used as a prefix in this case, plus the generic name Brycon.įlammeus: from the Latin flammeus, meaning ‘flame-coloured’, in reference to this species’ predominantly reddish colour pattern. Hyphessobrycon flammeus MYERS, 1924 Flame Tetra Etymology