Results 41 to 50 of about 4,539 (221)

FISHES (Actinopteri, Characiformes) FROM THE TAPYTA RESERVE WITH THREE NEW ADDITIONS TO THE PARAGUAYAN ICHTHYOFAUNA

open access: yesActa Biológica Colombiana, 2022
The Characiform fish species from the Tapyta Reserve and surrounding area, Caazapa, Paraguay, were inventoried during a year with electrofishing, netting, and trapping. A total of 20 species were registered, being Characidae the richest family.
Héctor Samuel Vera-Alcaraz   +1 more
doaj   +1 more source

Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil

open access: yesJournal of Fish Biology, EarlyView.
Abstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Lucas E. P. Kampfert   +5 more
wiley   +1 more source

Ossification of the cranium of Inpaichthys kerri (Characiformes: Acestrorhamphidae) with discussion of paedomorphic traits in the genus

open access: yesJournal of Anatomy, EarlyView.
In this study, we present a detailed description of the cranial development of Inpaichthys kerri (Characiformes: Acestrorhamphidae), highlighting important topics such as pedomorphic characters and their relationship with ontogeny and phylogeny, as well as ossification sequences unique to the species. Abstract The study of development provides valuable
Yasmim De Santana Santos   +1 more
wiley   +1 more source

Phylogeny of the family Characidae (Teleostei: Characiformes): from characters to taxonomy

open access: yesNeotropical Ichthyology
The family Characidae is the most diverse among Neotropical fishes. Systematics of this family are mainly based on pre-cladistic papers, and only recently a phylogenetic hypothesis for Characidae was proposed by the author.
Juan Marcos Mirande
doaj   +1 more source

Physical mapping of the 18S and 5S ribosomal genes in nine Characidae species (Teleostei, Characiformes)

open access: yesGenetics and Molecular Biology, 2008
Characidae is one of the largest fish families of the Neotropical region, and presenting a pronounced morphological variability, certainly does not constitute a monophyletic group.
Wellington Adriano Moreira Peres   +2 more
doaj   +1 more source

Water Parameters and Hydrodynamics in Rivers and Caves Hosting Astyanax mexicanus Populations Reveal Macro‐, Meso‐ and Microhabitat Characteristics

open access: yesEcology and Evolution, Volume 16, Issue 1, January 2026.
From 2009 to 2025, we have recorded the physicochemical parameters of the water and the hydrological regimes at localities hosting Astyanax mexicanus cavefish and surface fish populations in Mexico. Sampling 13 caves and 30 surface stations revealed strong signatures of the two macrohabitats, but also significant differences in specific water ...
Laurent Legendre   +5 more
wiley   +1 more source

Fauna parasitária de peixes oriundos de “pesque-pague” do município de Guariba, São Paulo, Brasil - DOI: 10.4025/actascibiolsci.v28i3.253

open access: yesActa Scientiarum: Biological Sciences, 2007
Este trabalho descreve a ocorrência e a sazonalidade de parasitos em peixes de “pesque-pague” do município de Guariba, Estado de São Paulo, Brasil (21º15`22``S, 48º18`58``W e 595 m de altitude), durante o período de agosto de 2001 a julho de 2002.
Sergio Henrique Canello Schalch   +2 more
doaj   +1 more source

Embryonic and Morphological Development of Larvae and Juvenile of the Buenos Aires Tetra, Hyphessobrycon anisitsi (Pisces Characidae) Characidae Fishes

open access: yesDevelopment & Reproduciton, 2015
We have launched an investigation for Embryonic Development, Larvae and Juvenile Morphology, of Buenos aires tetra in order to build basic data of Characidae and fish seeding production. We brought 50 couples of Characidae from Bizidduck aquarium in Yeosu-si, Jeollanamdo, from Korea on March of 2015.
Park, Jae-Min, Han, Kyeong-Ho, Han, Ran
openaire   +3 more sources

Tails of Biodiversity: Vertebrate Community Assessment in a Neotropical River Basin via eDNA Metabarcoding

open access: yesEnvironmental DNA, Volume 8, Issue 1, January–February 2026.
This study used environmental DNA (eDNA) metabarcoding to assess vertebrate biodiversity in headwater streams of the Rio Santo Antônio basin, southeastern Brazil, a tributary of the Rio Doce. A total of 119 vertebrate OTUs were identified, with oxidation–reduction potential emerging as the strongest environmental predictor of species richness.
Larissa Moreira‐Silva   +8 more
wiley   +1 more source

Dos especies nuevas de Creptotrema (Digenea: Allocreadiidae) de America del Sur

open access: yesRevista Mexicana de Biodiversidad, 2008
DOS ESPECIES NUEVAS DE DIGÉNEOS PERTENECIENTES A CREPTOTREMA TRAVASSOS, ARTIGAS Y PEREIRA, 1928 FUERON DESCRITAS DE EJEMPLARES DEPOSITADOS EN LA COLECCIÓN DE INVERTEBRADOS DEL MUSEO DE HISTORIA NATURAL DE GINEBRA, SUIZA. CREPTOTREMA LAMOTHEI N. SP.
STEPHEN S. CURRAN
doaj   +1 more source

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