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Fish assemblages of the Casiquiare River, a corridor and zoogeographical filter for dispersal between the Orinoco and Amazon basins
Aim The aim of this study was to determine whether the Casiquiare River functions as a free dispersal corridor or as a partial barrier (i.e. filter) for the interchange of fish species of the OrinocoExpand
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Ecology of the coporo, Prochilodus mariae (Characiformes, Prochilodontidae), and status of annual migrations in western Venezuela
Deforestation, overfishing, pollution, and construction of dams have severely impacted migratory fishes of western Venezuela. The coporo, Prochilodus mariae (Prochilodontidae), has supported theExpand
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Food habits of piranhas in the low llanos of Venezuela
Eight piranha species (Characidae: Serrasalminae) coexist in streams and pools of the western Orinoco River Basin Ilanos. The species differ in adult size, body form, and relative abundance.Expand
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Akawaio penak, a new genus and species of Neotropical electric fish (Gymnotiformes, Hypopomidae) endemic to the upper Mazaruni River in the Guiana Shield
Akawaio penak, a new genus and species, is described from the upper Mazaruni River, Guyana. The new species is diagnosed from all other species of Hypopomidae by several anatomical traits. TheExpand
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Annotated list and key to the stream fishes of Trinidad & Tobago.
Based on historical and museum records and recent extensive collecting we compiled a checklist of 77 fish species reported from the streams of Trinidad and Tobago. A key with photographs is providedExpand
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PERTURBACIONES CAUSADAS POR EL HOMBRE A LAS POBLACIONES DE PECES DE LOS LLANOS Y DEL PIEDEMONTE ANDINO DE VENEZUELA
Para la gran mayoria de los peces del bajo llano, esta region no es un sistema cerrado. Por el contrario, desde el punto de vista de sus ciclos biologicos. la misma esta intimamente conectada con losExpand
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Hyphessobrycon oritoensis (Characiformes: Characidae), a new species from the Putumayo River drainage, Colombian Amazon
Hyphessobrycon oritoensis (Characiformes: Characidae) is described from the Putumayo River drainage of the Colombian Amazon. The new species belongs to the H. heterorhabdus group and is distinguishedExpand
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Compositional change in fish assemblages along the Andean piedmont - Llanos floodplain gradient of the río Portuguesa, Venezuela
Llanos corresponde a uma area extensa de savanas e planicies de inundacao situadas no centro e no oeste da Venezuela, abrangendo um gradiente de elevacao desde o rio Orinoco ate a regiao montanhosaExpand
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Drift of characin larvae, Bryconamericus deuterodonoides, during the dry season from Andean piedmont streams
SynopsisThe downstream transport of fish larvae is well known from temperate running waters, but there exists remarkably little information for tropical streams. We sampled drift in two AndeanExpand
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Taxonomic review of Colombian Parodon (Characiformes: Parodontidae), with descriptions of three new species
We review species of Parodon Valenciennes, 1850 from the Magdalena, Cauca, Orinoco, Amazonas, Atrato and Caribbean-Guajira River basins of Colombia using meristic and morphological characters. WeExpand
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