Results 91 to 100 of about 1,864 (206)

Bibliografía argentina de peces de agua dulce. [PDF]

open access: yes, 2006
Espanol: En la presente lista bibliográfica fueron recopiladas las referencias sobre los peces continentales de la Argentina, del período comprendido entre mediados del siglo XVIII y fines del año 2005.
Cuello, Mariela V.   +4 more
core  

New Hyphessobrycon from the upper rio Pardo drainage in eastern Brazil (Teleostei: Characiformes: Characidae)

open access: yesNeotropical Ichthyology
A new species of characid, Hyphessobrycon vinaceus, is described from the upper rio Pardo, Minas Gerais, Brazil. The new species is distinguished from all other Hyphessobrycon species by the combination of the following characters: the body red or ...
Vinicius A. Bertaco   +2 more
doaj   +1 more source

Feeding convergence in South American and African zooplanktivorous cichlids Geophagus brasiliensis and Tilapia rendalli [PDF]

open access: yes, 1991
Acara, #Geophagus brasiliensis$, and red-breasted bream, #Tilapia rendalli$, are important planktivorous cichlids in Southern Brazilian lakes and reservoirs. In laboratory experiments, I quantified behavior and selectivity of different sizes of these two
Lazzaro, Xavier
core   +1 more source

Morphology, osteology and reductions in the ontogeny of the scaleless characid Gymnocharacinus bergi

open access: yesJournal of Applied Ichthyology, 2005
Summary The aim of this study was to analyse cartilage formation and ossification during the early life history of the relic fish Gymnocharacinus bergi. Additionally, changes associated with feeding and swimming were taken into account while considering the origin of the morphological reductions described for adult G.
Miquelarena, A., Ortubay, S., Cussac, V.
openaire   +2 more sources

Resposta das comunidades de peixes a intensa seca em riachos de savana brasileira [PDF]

open access: yes, 2017
Os riachos são submetidos a intensas mudanças na sua estrutura física ao longo das estações. Secas intensas nos períodos de estiagem tem sido frequentes e potencialmente deletérias para as espécies aquáticas.
Silva, Dianne Michelle Alves da   +1 more
core   +1 more source

Jupiaba citrina, a new species from rio Aripuanã, rio Madeira basin, Amazonas and Mato Grosso States, Brazil (Characiformes: Characidae)

open access: yesNeotropical Ichthyology
A new species of Jupiaba Zanata is described from tributaries of the rio Aripuanã, rio Madeira basin, Amazonas and Mato Grosso States, Brazil. The new species can be diagnosed from its congeners (except J. abramoides, J. anteroides, and J.
Angela M. Zanata, Willian M. Ohara
doaj   +1 more source

Cavefish as biological models in the laboratory and in the wild. [PDF]

open access: yesZool Res, 2023
Jeffery WR, Ma L, Zhao YH.
europepmc   +1 more source

Shared and unique patterns of embryo development in extremophile poeciliids [PDF]

open access: yes, 2011
Background: Closely related lineages of livebearing fishes have independently adapted to two extreme environmental factors: toxic hydrogen sulphide (H2S) and perpetual darkness.
Ingo Schlupp   +4 more
core   +4 more sources

Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)

open access: yesNeotropical Ichthyology
A new inseminating fish species of the family Characidae, Bryconadenos tanaothoros, from tributaries of the upper rio Xingu and upper rio Tapajós basins, Mato Grosso, Brazil is described as the type species of a new genus.
Stanley H. Weitzman   +3 more
doaj   +1 more source

Pterobrycon myrnae, a remarkable new glandulocaudine characid fish from Costa Rica

open access: yes, 2016
A new species of characid fish, in which the males have greatly enlarged scales on the middle of the flanks, is described from southern Costa Rica. During courtship the expanded tips of these "paddle sea les" serve as a stimulus to the female which later takes a spermatophore into her mouth. The peculiar sexual dimorphism of P.
openaire   +2 more sources

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