Results 31 to 40 of about 224 (85)

A new species of Tetragonopterus Cuvier, 1816 (Characiformes: Characidae: Tetragonopterinae) from the rio Jari, Amapá, northern Brazil

Neotropical Ichthyology
A new species of Tetragonopterus is described from the rio Jari, a tributary to the left margin of rio Amazonas, at the border between Amapá and Pará States, northern Brazil.
Bruno F Melo, Ricardo C Benine, Tatiane C Mariguela, Claudio Oliveira   +3 more
doaj   +1 more source

Dieta de Bryconamericus iheringii (Ostariophysi: Characidae) em riachos da bacia do rio Tibagi, Estado do Paraná =Diet of Bryconamericus iheringii (Ostariophysi: Characidae) from streams of Tibagi river basin, Parana State

Acta Scientiarum: Biological Sciences, 2006
Exemplares de Bryconamericus iheringii (Boulenger, 1887) coletados nos riachos Cambé, Taquari, Água da Floresta e Baroré, localizados na bacia do rio Tibagi, Estado do Paraná, foram analisados para verificar sua dieta.
Maria Carolina Gomiero Oricolli, Sirlei Terezinha Bennemann   +1 more
doaj  

A study of dentition in Argentine characoid fishes [PDF]

, 2013
The dentition and related structures of 34 species of characoids belonging to 27 genera are described within this paper. A relatively high number of specimens were studied in order to obtain an estimation of intraspecific variation.
Miquelarena, Amalia María
core  

Embryonic Development of Bryconamericus caucanus (Characidae: Tetragonpterinae) under Laboratory Conditions

, 2010
: In this study we describe the early stages of development of Bryconamericus caucanus under laboratory conditions. Mature females (mean weight 8.12 g) received two intraperitoneal doses of Carp Pituitary Extract (1st dose of 0.5 mg / kg at time 0 and ...
Andrés Montoya, Mauricio Arias, Olivera Ángel, Martha, Arias, Mauricio, Martha Olivera-Angel, Montoya López, Andrés Felipe   +5 more
core   +1 more source

Hyphessobrycon taphorni y H. eschwartzae (Teleostei: Characidae) dos nuevas especies de peces de la cuenca del río Madre de Dios, Perú Hyphessobrycon taphorni and H. eschwartzae (Teleostei: Characidae) two new species of fish in the basin of Madre de Dios river, Peru

Revista de Biología Tropical, 2013
Hyphessobrycon con 129 especies válidas, es un género de peces que presenta una gran diversidad de especies dentro de la ictiofauna neotropical, alcanza su mayor diversidad en la cuenca del Amazonas con alrededor del 70% de estas especies, es altamente ...
Carlos A. García-Alzate, César Román-Valencia, Hernán Ortega   +2 more
doaj  

Karyotypic diversity among three species of the genus Astyanax (Characiformes: Characidae)

Brazilian Journal of Biology
The group Incertae sedis within the Characidae family currently includes 88 genera, previously included in the subfamily Tetragonopterinae. Among them is the genus Astyanax comprising a group of species with similar morphology and widely distributed in ...
P. B. Nishiyama, M. M. R. Vieira, F. E. Porto, L. A. Borin, A. L. B. Portela-Castro, I. C. M. Santos   +5 more
doaj   +1 more source

Effect of dosage of orally administered 17α-methyltestosterone on sex reversion of the yellowtail tetra Astyanax lacustris (Lütken, 1875). [PDF]

Anim Reprod, 2023
Farias RDS, Oliveira KRDS, de Souza ME, Ferreira DA, Silva AADN, da Silva VA, Dunham R, Coimbra MRM.   +7 more
europepmc   +1 more source

Hyphessobrycon taphorni y H. eschwartzae (Teleostei: Characidae) dos nuevas especies de peces de la cuenca del río Madre de Dios, Perú

Revista de Biología Tropical, 2013
Hyphessobrycon con 129 especies válidas, es un género de peces que presenta una gran diversidad de especies dentro de la ictiofauna neotropical, alcanza su mayor diversidad en la cuenca del Amazonas con alrededor del 70% de estas especies, es altamente ...
Carlos A. García-Alzate, César Román-Valencia, Hernán Ortega   +2 more
doaj  

Impact assessment of the introduction of Cichla kelberi in a large Neotropical reservoir and its lateral lagoons (Upper Paraná River Basin, Brazil)

Brazilian Journal of Biology
This study aimed to understand how the introduction of Cichla kelberi in Rosana Reservoir (Paranapanema River) affected the native ichthyofauna. Data on the structure of the small fish fauna assemblage were obtained before and after the introduction of ...
M. Ferrareze, M. G. Nogueira
doaj   +1 more source

Diversity of Nematoda and Digenea from different species of characiform fishes from Tocantins River, Maranhão, Brazil. [PDF]

Rev Bras Parasitol Vet, 2022
Cárdenas MQ, Justo MCN, Reyes ADRP, Cohen SC.   +3 more
europepmc   +1 more source