Results 41 to 50 of about 2,788 (258)

A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae) [PDF]

open access: yesNeotropical Ichthyology, 2023
The species diversity and taxonomy of Rhamphichthys is reviewed and seven species are considered valid: Rhamphichthys apurensis from the Orinoco and Cuyuni river basins; R. drepanium from the Amazon and Orinoco river basins; R.
Tiago P. Carvalho, James S. Albert
doaj   +1 more source

Phylogenetic relationships among Acestrorhynchus species (Ostariophysi: Characiformes: Acestrorhynchidae) [PDF]

open access: yes, 2007
Figure 12. Posterior orbital and otic regions of Acestrorhynchus pantaneiro, MZUSP 59893, 103.8-mm standard length; left side, anterior to left.
Toledo-Piza, Mônica   +1 more
core   +1 more source

Evaluación de cuatro anestésicos en peces cebo de agua dulce (Cheirodon interruptus) (Ostariophysi: Characidae)

open access: yesRevista de Investigaciones Veterinarias del Perú, 2022
El estudio tuvo como objetivo evaluar la respuesta del eugenol, propofol, isofluorano y lidocaína sobre variables fisiológicas y anestesiológicas de Cheirodon interruptus, el pez cebo de mayor utilización en Argentina. Se conformaron seis grupos: eugenol
Natalia Urzúa Pizarro   +6 more
semanticscholar   +1 more source

Oligosarcus amome (Ostariophysi: Characidae), a new species from the río Uruguay basin, Misiones, Argentina [PDF]

open access: yes, 2015
Almirón, Adriana, Casciotta, Jorge, Piálek, Lubomír, Doubnerová, Klára, Říčan, Oldřich (2015): Oligosarcus amome (Ostariophysi: Characidae), a new species from the río Uruguay basin, Misiones, Argentina.
Almirón, Adriana   +4 more
core   +1 more source

New species of Lebiasina (Ostariophysi: Characiformes: Lebiasinidae) from the upper Mazaruni River drainage, Guyana [PDF]

open access: yes, 2013
Netto-Ferreira, André L., Lopez-Fernandez, Hernán, Taphorn, Donald C., Liverpool, Elford A. (2013): New species of Lebiasina (Ostariophysi: Characiformes: Lebiasinidae) from the upper Mazaruni River drainage, Guyana.
Liverpool, Elford A.   +3 more
core   +1 more source

Filling gaps in the ecological knowledge on Auchenipteridae catfishes (Ostariophysi: Siluriformes): first data for Trachelyichthys exilis

open access: yesActa Amazonica, 2022
The feeding habit of Trachelyichthys exilis is described for the first time, with additional comments on its growth type and size at sexual maturity.
T. Freitas, J. Zuanon
semanticscholar   +1 more source

New species of Curimatopsis from the río Caroni, Orinoco basin, Venezuela, with comments on C. macrolepis (Characiformes: Curimatidae) [PDF]

open access: yesNeotropical Ichthyology, 2020
A new species of Curimatopsis is described from the highlands of the western Guiana Shield in the río Carapo and río Paragua, tributaries of the río Caroni in the Orinoco basin, southeastern Venezuela.
Bruno F. Melo
doaj   +1 more source

A new Hyphessobrycon (Ostariophysi: Characiformes: Characidae) from the middle Amazon basin, Brazil [PDF]

open access: yes, 2014
Lima, Flávio C. T., Coutinho, Daniel P., Wosiacki, Wolmar B. (2014): A new Hyphessobrycon (Ostariophysi: Characiformes: Characidae) from the middle Amazon basin, Brazil. Zootaxa 3872 (2): 167-179, DOI: 10.11646/zootaxa.3872.2.
Wosiacki, Wolmar B.   +2 more
core   +1 more source

Molecular cloning, sequencing and tissue expression of vasotocin and isotocin precursor genes from Ostariophysian catfishes: Phylogeny and evolutionary considerations in teleosts

open access: yesFrontiers in Neuroscience, 2015
Basic and neutral neurohypophyseal (NH) nonapeptides have evolved from vasotocin (VT) by a gene duplication at the base of the gnathostome lineage. In teleosts, VT and IT are the basic and neutral peptides, respectively.
Putul eBanerjee   +2 more
doaj   +1 more source

Integrative taxonomy reveals a new species of Neotropical headstanding fish in genus Schizodon (Characiformes: Anostomidae)

open access: yesNeotropical Ichthyology, 2021
Schizodon encompasses approximately 15 species of Neotropical headstanding fishes. Integrative taxonomy, combining molecular and morphometric analyses with traditional taxonomic methods, was used to investigate Schizodon vittatus and its potential new ...
Júlio C. Garavello   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy