Results 111 to 120 of about 2,449 (227)

Especies de peces gymnotiformes (Gymnotiformes, Teleostei) de Colombia

open access: yes
Neotropical electric fishes (Teleostei, Gymnotiformes), also called American knifefishes, are an important component of the nocturnal ichthyological fauna in Middle and South America.
Maldonado-Ocampo, Javier Alejandro   +1 more
core   +1 more source

Comparing lacustrine environments: the importance of the kind of habitat on the structure of fishes

open access: yesActa Limnologica Brasiliensia, 2018
Aim Fish diversity in two lentic environments: a lake connected (Barbosa lake) to a river and an artificial reservoir (Ninfeias reservoir) were determined in the dry and rainy periods in 2015. We expected to find more diversity in the connected lake and
Reinaldo José de Castro   +3 more
doaj   +1 more source

Phylogenetic revision of Gymnotidae (Teleostei: Gymnotiformes), with descriptions of six subgenera

open access: yesPLOS ONE, 2019
The diversity of gymnotid electric fishes has been intensely studied over the past 25 years, with 35 species named since 1994, compared to 11 species in the previous 236 years. Substantial effort has also been applied in recent years to documenting gymnotid interrelationships, with seven systematic studies published using morphological and molecular ...
Jack M. Craig   +3 more
openaire   +4 more sources

Influência do método de amostragem nas estimativas de detecção e ocupação de peixes elétricos (Gymnotiformes) em igarapés da Reserva Ducke, Amazônia Central [PDF]

open access: yes, 2016
Recording species occurrence is not always a simple task, because it is subject to flaws in the detection. Fishes of the Gymnotiformes can be difficult to detect, since they have nocturnal and cryptobiotic habits.
Andrade, André Luiz Ramos Holanda de
core  

ProBiota | Serie Técnica y Didáctica | Guías de ictiología: orden Gymnotiformes

open access: yes, 2014
Recopilación de imágenes, gráficos y características de los peces pertenecientes al orden de los Gymnotiformes, que comprende un grupo de peces electrogénicos de agua dulce exclusivamente neotropicales.Facultad de Ciencias Naturales y ...
Protogino, Lucila Cristina
core  

Feeding habit of Eigenmannia trilineata Lopez & Castello, 1966 (Teleostei: Sternopygidae) of Parque Estadual de Itapuã, RS, Brazil

open access: yesNeotropical Ichthyology
This study aims to describe the feeding habits of a population of the weakly electric fish Eigenmannia trilineata from Southern Brazil through the monthly frequency variation of replection (RI) and hepatosomatic (HSI) indexes, condition factor (CF) and ...
Júlia Giora   +2 more
doaj   +1 more source

The brain of Brycon orbignyanus (Valenciennes, 1850) (Teleostei: Characiformes: Bryconidae): gross morphology and phylogenetic considerations

open access: yesNeotropical Ichthyology
The brain of Brycon orbignyanus is described as a model for future studies of the gross morphology of the central nervous system in Characiformes. The study of brain gross morphology of 48 distinct taxa of Characiformes, one of Cypriniformes, two of ...
Thiago N. A. Pereira   +1 more
doaj   +1 more source

Electric fishes of the genus Sternarchorhynchus (Teleostei, Ostariophysi, Gymnotiformes); phylogenetic and revisionary studies

open access: yes, 2010
Figure 2. Premaxilla and anterior portion of neurocranium of Sternarchorhynchus goeldii, MCZ 46887; dorsal view, anterior to left.Published as part of Santana, Carlos David De & Vari, Richard P., 2010, Electric fishes of the genus Sternarchorhynchus ...
RICHARD P. VARI   +3 more
core   +1 more source

South American electric knifefishes of the genus Archolaemus (Ostariophysi, Gymnotiformes): undetected diversity in a clade of rheophiles

open access: yes, 2012
Vari, Richard P., Santana, Carlos David De, Wosiacki, Wolmar B. (2012): South American electric knifefishes of the genus Archolaemus (Ostariophysi, Gymnotiformes): undetected diversity in a clade of rheophiles.
Wosiacki, Wolmar B.   +2 more
core   +1 more source

Eigenmannia besouro, a new species of the Eigenmannia trilineata species-group (Gymnotiformes: Sternopygidae) from the rio São Francisco basin, northeastern Brazil

open access: yes, 2016
Peixoto, Luiz Antônio W., Wosiacki, Wolmar B. (2016): Eigenmannia besouro, a new species of the Eigenmannia trilineata species-group (Gymnotiformes: Sternopygidae) from the rio São Francisco basin, northeastern Brazil.
Peixoto, Luiz Antônio W.   +3 more
core   +1 more source

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