Results 51 to 60 of about 2,092 (112)

A new catfish species of Microcambeva Costa & Bockmann, 1994 (Siluriformes: Trichomycteridae) from southern Brazil, with a redescription of M. ribeirae Costa, Lima & Bizerril, 2004

open access: yesJournal of Fish Biology, Volume 109, Issue 1, Page 146-164, July 2026.
Abstract Among the few species of Microcambeva reported as occurring in more than one hydrographic basin, M. ribeirae has been previously listed from both the Ribeira de Iguape and the Guaraqueçaba basins. However, morphological and molecular analyses revealed that the specimens from Guaraqueçaba represent a new species, which is described in this ...
Lucas S. de Medeiros   +6 more
wiley   +1 more source

A new, conspicuously pigmented Pyrrhulina (Teleostei: Characiformes: Lebiasinidae) from the Río Tigre, Loreto, Peru

open access: yesJournal of Fish Biology, Volume 109, Issue 1, Page 102-110, July 2026.
Abstract A new species of Pyrrhulina is described based on morphological and molecular evidence. Pyrrhulina punctata is distinguished from all congeners by the presence of a series of 7 to 16 irregular blotches of dark pigmentation on the flanks, equally marked in juveniles and adult specimens, the presence of 26–28 lateral‐line scales, 17–21 maxillary
Andre Netto‐Ferreira   +4 more
wiley   +1 more source

Ecological aspects of Lebiasina erythrinoides (Characiformes: Lebiasinidae) from an andean piedmont stream in Colombia

open access: yesUniversitas Scientiarum, 2016
The present study describes ecological aspects of Lebiasina erythrinoides; 200 individuals were sampled throughout an annual hydrological cycle from October 2008 to September 2009 in La Calaboza stream, a Piedmont tributary of the Rio Cravo Sur.
Javier Alejandro Maldonado Ocampo   +2 more
doaj   +1 more source

A new Hyphessobrycon (Characiformes: Acestrorhamphidae) of the Hyphessobrycon agulha lineage of Hyphessobryconinae from the lower Aripuanã basin, Brazil, with comments about the lineage

open access: yesJournal of Fish Biology, Volume 109, Issue 1, Page 58-69, July 2026.
Abstract A new species of Hyphessobrycon is described from a tributary of Rio Jatuarana, lower Rio Aripuanã basin, Rio Madeira basin, Apuí, Amazonas. The new species is part of the Hyphessobrycon agulha lineage, with the typical midlateral narrow black stripe immediately followed dorsally by an iridescent stripe.
Tiago C. Faria   +3 more
wiley   +1 more source

Life‐History and Landscape Context Shaping the Spatial Genetic Structure of the Migratory Amazonian Fish Prochilodus nigricans

open access: yesFreshwater Biology, Volume 71, Issue 6, June 2026.
ABSTRACT The Neotropical migratory fish Prochilodus nigricans plays a critical ecological and socioeconomic role in the Amazon basin. Nevertheless, little is known about its populations and the genetic diversity pattern of the species. In light of this, the current study investigates the spatial genetic structure and diversity of P.
Ueslei Lopes   +5 more
wiley   +1 more source

Lista anotada de los tipos de peces en la colección del Laboratorio de Ictiología, Universidad del Quindío, Armenia, Colombia (IUQ)

open access: yesBiota Colombiana, 2017
Se elaboró una lista completa de los tipos depositados en la colección del Laboratorio de Ictiología de la Universidad del Quindío, Armenia, Colombia (IUQ). Ejemplares tipo de 63 especies nominales de peces óseos continentales han sido depositados en IUQ,
César Román-Valencia   +4 more
doaj   +3 more sources

Dieta y reproducción de Bryconamericus caucanus (Characiformes: Characidae) en la Quebrada La Venada, Río Quindío, Colombia

open access: yesRevista Mvz Cordoba, 2017
Objetivo. Se analizó la ecología trófica y reproductiva de Bryconamericus caucanus en la quebrada la Venada, Rio Quindío, Alto Cauca, Colombia. Materiales y métodos. Los ejemplares se recolectaron entre enero y diciembre del 2013.
Cristian Román P.   +1 more
doaj   +1 more source

Integrative taxonomy reveals two new species of whiptail catfishes Loricaria (Siluriformes: Loricariidae) from northeastern Brazil

open access: yesJournal of Fish Biology, Volume 108, Issue 6, Page 2080-2097, June 2026.
Abstract Two new species of whiptail catfish, Loricaria (Siluriformes: Loricariidae), were discovered in the Munim and Itapecuru river basins, Maranhão State, northeastern Brazil, through an integrative taxonomic approach combining morphology and mitochondrial DNA.
Ananda. C. Serejo‐Saraiva   +4 more
wiley   +1 more source

Modified techniques used for microsatellite and AFLP for the population study of divers species at the Sinu river fish, Colombia

open access: yesRevista Colombiana de Biotecnología, 2004
Few genetic conservation studies carried out in Colombia have applied molecular biology techniques. Protocols and modifications arising from the genetic study of four fish species from the Sinú river basin are presented as guidelines for future work in ...
Lamprea Natalia   +4 more
doaj   +2 more sources

First Report of CRISPR‐Cas9 Ribonucleoprotein Delivery Into Teleost Spermatozoa With Preserved Membrane and Genomic Integrity

open access: yesMolecular Reproduction and Development, Volume 93, Issue 5, May 2026.
Capillary electroporation enables minimally invasive delivery of CRISPR‐Cas9 ribonucleoprotein complexes into teleost spermatozoa while preserving membrane and genomic integrity, with a single pulse providing optimal balance between RNP uptake and sperm functionality.
Laís dos Santos Gonçalves   +10 more
wiley   +1 more source

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