Results 61 to 70 of about 412 (157)

Morphometric variation between two sympatric piranha species in Lake Tucuruí, Eastern Amazon [PDF]

Brazilian Journal of Biology
The morphometry is an essential tool for detecting variations in body shape associated with ontogenetic, ecological, and evolutionary processes in fish populations.
L. F. G. Passos, I. N. P. Castro, R. N. S. Ferreira, R. F. C. Souza, Y. A. Mendes, D. H. Siqueira-Silva   +5 more
doaj   +2 more sources

Fish Sperm Subpopulations Detection, Separation, and Application: Current State and Trends

Reviews in Aquaculture, Volume 18, Issue 4, September 2026.
Modern advances in sperm biology highlight the necessity of recognising intra‐ejaculate heterogeneity as a central concept for advancing both the fundamental understanding of fertilisation processes and the development of artificial reproduction techniques in fishes. ABSTRACT Sperm subpopulations represent a fundamental manifestation of intra‐ejaculate
Viktoriya Dzyuba, William V. Holt, Borys Dzyuba   +2 more
wiley   +1 more source

Echoes of Evolution in Holocentridae: Harmony Between Phylogeny, Morphology and Acoustics

Ecology and Evolution, Volume 16, Issue 8, August 2026.
Using phylogenetic, morphological, and acoustic data from 53 species, we reconstructed the evolution of acoustic communication in nocturnal reef fishes of the family Holocentridae. Our results reveal two major clades with distinct sound‐producing morphologies and acoustic features, and suggest a three‐step diversification process involving the ...
Marine Banse, Maarten Van Steenberge, Gontran Sonet, Denisa Magda, Yves Corbisier de Harbonnier de Cobreville, David Lecchini, Terry J. Donaldson, Eric Parmentier   +7 more
wiley   +1 more source

Serrasalmidae

, 2010
Node 187: Serrasalmidae (100 / 100 / 100 / 59) Genera Acnodon Eigenmann, Catoprion Müller & Troschel, Colossoma Eigenmann & Kennedy, † Megapiranha Cione, Dahdul, Lundberg & Machado-Allison, Metynnis Cope, Mylesinus Valenciennes, Myleus Müller & Troschel, Mylossoma Eigenmann & Kennedy, Ossubtus Jégu, Piaractus, Pristobrycon Eigenmann, Pygocentrus Müller
openaire   +1 more source

Albendazole, levamisole and ivermectin are effective against monogeneans of Colossoma macropomum (Pisces: Serrasalmidae) [PDF]

Journal of Fish Diseases, 2019
AbstractThis study evaluated the efficacy of albendazole, ivermectin, levamisole, mebendazole and praziquantel on monogeneans of Colossoma macropomum, based on in vitro and in vivo assays. In vitro assays indicated that albendazole (500, 100, 1,500 and 2,000 mg/L), ivermectin (200, 250, 300 and 350 mg/L) and levamisole (50, 75, 100 and 125 mg/L) were ...
Carliane Maria Guimarães Alves, Joziele Neves Nogueira, Isaac Belo Barriga, Joilson Rodrigues dos Santos, Gracienhe Gomes Santos, Marcos Tavares‐Dias   +5 more
openaire   +2 more sources

Fossil freshwater fishes from the Pliocene of northern Colombia and the palaeogeography of northern South America

Papers in Palaeontology, Volume 12, Issue 4, July/August 2026.
Abstract Freshwater fishes from the northwestern Colombian Andes are reported from the Pliocene Sincelejo and Ware formations. A total of 10 taxa have been identified, involving two orders, five families and nine genera. Characters from dental morphology, fin spines and cranial bones are provided as taxonomic tools for the study of fossil fishes.
Gustavo A. Ballen, Camilo Montes, Jorge D. Carrillo‐Briceño, Sergio Bogan, Sandra Reinales, Mario C. C. de Pinna, Carlos Jaramillo   +6 more
wiley   +1 more source

Las "palometas" o "pirañas" de las aguas del Paraná medio

Acta Zoológica Lilloana, 2022
Este trabajo trata de las especies del género Serrasalmus del medio y bajo río Paraná y cuerpos de agua afines. Los autores hacen una revisión de la literatura referente a estas especies en dicho río señalando que solo se conocen tres: Serrasalmus ...
A. Bonetto, C. Pignalberi, E. Cordiviola
doaj  

Evaluation of ichthyofauna in lotic and lentic environments in the Araguaia River basin, Cerrado Biome, Brazil

Acta Scientiarum: Biological Sciences, 2022
The Araguaia River is an important watercourse located in Central Brazil and well known for its diversity of fish fauna. Differences between landscape and resources in the distinct environments existing in a floodplain can determine the success of a ...
Bernardo Ramos Simões Corrêa, Murilo Luiz e Castro Santana, Lilian de Castro Moraes Pinto, Fernanda Nunes de Araujo Fonseca, Carlos Alberto da Cruz Junior, Rodrigo Diana Navarro   +5 more
doaj   +1 more source

A new large species of Myloplus (Characiformes, Serrasalmidae) from the Rio Madeira basin, Brazil [PDF]

ZooKeys, 2016
Myloplus zorroi sp. n. is described from the Rio Madeira Basin in Amazonia. The new species had been treated as an undescribed Tometes species because of the absence of a marked abdominal keel and few small spines forming its prepelvic serrae, features commonly found in the species of the Myleus clade of the Serrasalmidae (species of genera Myleus ...
Andrade, M. C., /Jégu, Michel, Giarrizzo, T.   +2 more
openaire   +4 more sources

Morphological and histometric features of the caudal kidney in piranha Pygocentrus nattereri (Characiformes: Serrasalmidae)

Neotropical Ichthyology, 2023
Abstract Pygocentrus nattereri is a widely distributed species in the Neotropical region and a potential bio-indicator. Kidneys have functions in fish physiology, allowing them to live in different environments. We aimed to compare the histological characteristics of caudal kidneys between males and females, associating them with the renosomatic index (
Sandriely F. Marcondes, Mayara S. Siqueira, Taynara R. F. Leão, Robson A. Rodrigues, Karine N. N. Farias, André L. N. Silva, Lilian Franco-Belussi, Carlos E. Fernandes   +7 more
openaire   +3 more sources