Results 51 to 60 of about 860,253 (247)

Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil

Neotropical Ichthyology
A new species of characid fish, Astyanax totae, is described from a small tributary in the upper drainage of the rio Iguaçu, Paraná basin, Brazil.
Carolina Ferreira Haluch, Vinícius Abilhoa   +1 more
doaj   +1 more source

Importance and spatial patterns of invisible fisheries in Amazonian clear‐water rivers as revealed by fisher knowledge and collaboration

Conservation Biology, Volume 40, Issue 1, February 2026.
The graphical abstract highlights the research collaboration with fishers through interviews to record fishers' knowledge and participatory monitoring, to provide data on small‐scale fisheries in three clear water rivers (Trombetas, Tapajos and Tocantins).
Renato A. M. Silvano, Kaluan C. Vieira, Paula E. R. Pereyra, Luís H. Tomazoni‐Silva, Ivan A. Alves, Jaqueline G. Bezerra, Márcia C. F. Dutra, Friedrich W. Keppeler, Carolina B. Nunes, Cristiane V. Cunha, Gustavo Hallwass   +10 more
wiley   +1 more source

Trichodina mutabilis (Protozoa: Ciliophora: Trichodinidae) from the characid fish Astyanax mexicanus in the Cuatro Ciénegas region, northern Mexico

, 2014
As a part of a series of ongoing studies on trichodinids of freshwater fishes of Mexico, several species from diverse localities in the Cuatro Cienegas region, Coahuila, northern Mexico, were examined.
A. G. Islas-Ortega, R. Aguilar-Aguilar
semanticscholar   +1 more source

Characterization of Mitochondrial Genomes and Evolutionary Relationships in Two Moenkhausia (Characiformes: Acestrorhamphidae)

Ecology and Evolution, Volume 16, Issue 1, January 2026.
This study successfully decoded the complete mitochondrial genomes of two Moenkhausia species, with total lengths of 16,439 and 16,461 bp, respectively. This study enhances genomic resources for Acestrorhamphidae and provides a foundation for investigating evolutionary mechanisms and developing molecular markers.
Cheng‐He Sun, Xiao‐Die Chen, Yi‐Jing Zhan, Yang Xu, Chang‐Hu Lu   +4 more
wiley   +1 more source

Astyanax vermilion and Astyanax burgerai: new characid fishes (Ostariophysi: Characiformes) from Northeastern Bahia, Brazil [PDF]

Neotropical Ichthyology, 2009
Two new Astyanax species, A. vermilion, from rio Almada and rio Cachoeira, and A. burgerai, from rio Almada, Bahia State, Brazil, are described. Astyanax vermilion is distinguished from most of its congeners and from all other Astyanax species known from northeastern Brazilian drainages by having distal portion of pelvic fins dark, a combination of ...
Zanata, Angela M., Camelier, Priscila
openaire   +4 more sources

Amazonian fish migration as a social–cultural–ecological process

People and Nature, Volume 7, Issue 12, Page 3297-3312, December 2025.
Abstract In this study, we highlight the rich perspectives and explanations of fish migration held by Indigenous groups across the Amazon. We present the aspects of Indigenous cosmological stories, drawing from our exploratory review of cultural ethnographies and grey literature, as well as the authors' own experiences. We ask, how do Amazonian peoples
LuLu Victoria‐Lacy, Thiago B. A. Couto, Natalia C. Piland, Jesús Dámaso, Stephannie Fernandes, Simone Athayde, Elizabeth P. Anderson   +6 more
wiley   +1 more source

A new species of Astyanax (Ostariophysi: Characiformes: Characidae) from the upper rio Iguaçu basin, southern Brazil

Neotropical Ichthyology
Astyanax eremus, a new species of geographically isolated characid fish, is described from a small tributary of the upper rio Iguaçu basin. The new species belongs to the Astyanax scabripinnisspecies complex and is easily distinguished from its congeners
Leonardo F. S. Ingenito, Luiz F. Duboc
doaj   +1 more source

Presence of Cheirodon Interruptus in Valcheta stream, Río Negro province, Argentina [PDF]

, 2015
El arroyo Valcheta es una cuenca endorreica localizada en la provincia de Río Negro, Argentina. En este arroyo se conocen dos especies de vertebrados endémicas: la mojarra desnuda ( Gymnocharacinus bergii ) y la rana de Valcheta ( Pleurodema ...
Gosztonyi, Atila Esteban, Kacoliris, Federico Pablo, López, Hugo Luis, Perez, Cristian Hernan Fulvio, Petracci, Pablo Fabricio, Povedano, Emilio   +5 more
core  

Interspecific Associations of the Rare and Endangered Stingray (Styracura schmardae) in Caribbean Sandy‐Bottom Habitats

Ecology and Evolution, Volume 15, Issue 11, November 2025.
We document novel interspecific associations of the endangered Atlantic chupare stingray (Styracura schmardae) in Caribbean sandy‐bottom habitats. Observations include nuclear–follower interactions with needlefish (Strongylura marina) and hitchhiking by sharksuckers (Echeneis naucrates), revealed through direct in situ records and citizen science data ...
Gustavo F. de Carvalho‐Souza, Erica Sparaventi, Silvia Echeverría‐Sáenz   +2 more
wiley   +1 more source

Knodus pasco sp. n. - a new characid fish (Teleostei: Characiformes: Characidae) from Peru [PDF]

Vertebrate Zoology, 2007
A new species – Knodus pasco sp. n. – from surroundings of San Antonio de Cacazú in Peru (Departamento Pasco) is described (Teleostei: Characiformes: Characidae). It is a small species of the genus Knodus EIGENMANN, 1911 (lateral line complete, basis of caudal fin scaled, four teeth in the second row of premaxillary bone), which differs from all ...
openaire   +1 more source