Results 51 to 60 of about 644 (186)

Isolated in the highlands, found in the museum: A new species of Characidium (Crenuchidae) from a Bolivian National Park, with a CT scan revealing features

Journal of Fish Biology, EarlyView.
Abstract A new species of Characidium is described from a small, isolated river in the highland areas of Noel Kempff Mercado National Park, Bolivia. The new taxon can be diagnosed by the presence of a relatively broad and conspicuous dark midlateral stripe extending from the tip of snout to the base of the caudal fin, markedly darker than the vertical ...
Leonardo Oliveira‐Silva, Karina Or, Angela Zanata, Scott A. Schaefer   +3 more
wiley   +1 more source

Who's behind those red eyes? The Moenkhausia oligolepis group in Argentina (Characiformes: Characidae) [PDF]

, 2020
The history of red-eyed Moenkhausia in Argentina dates back to 1937 when Meinken mentioned M.sanctaefilomenae for the first time based on specimens received from Corrientes.
Aguilera, Gaston, Teran, Guillermo Enrique, Mirande, Juan Marcos, Koerber, Stefan   +3 more
core  

A new species of Moenkhausia Eigenmann (Characiformes: Characidae) from the rio Xingu basin, Brazil

Neotropical Ichthyology
A new species of Moenkhausia from the upper rio Xingu basin is described. Moenkhausia eurystaenia is distinguished from all congeners, except M. heikoi and M.
Manoela M. F. Marinho
doaj   +1 more source

High trophic niche overlap between sympatric peacock basses (Cichliformes: Cichlidae: Cichla): Concordant findings from three dietary analysis methods

Journal of Fish Biology, EarlyView.
Abstract Dietary analysis has contributed to our understanding of animal niches, interspecific interactions, community structure and the flow of matter and energy in food webs. We employed three methods of dietary analysis to estimate trophic niche overlap between two peacock bass species, Cichla cataractae and Cichla ocellaris, across sympatric ...
Benton L. Fry, Hayden C. Roberts, Kirk O. Winemiller   +2 more
wiley   +1 more source

A new Moenkhausia Eigenmann, 1903 (Ostariophysi: Characiformes) from Chapada Diamantina, rio Paraguaçu Basin, Bahia, Northeastern Brazil

Neotropical Ichthyology
Moenkhausia diamantina, new species, is described from tributaries of the rio Paraguaçu, BA, northeastern Brazil. This species is distinguished from all congeners by features of body color pattern, the presence of scales on the predorsal median line and ...
Ricardo C. Benine, Ricardo M. C. Castro, Alexandre C. A. Santos   +2 more
doaj   +1 more source

Eating at the edges: the feeding mode and the individual-resource networks of a characid fish in the periphyton

Acta Limnologica Brasiliensia, 2020
: Aim We evaluated the predation interactions between Moenkhausia sanctaefilomenae and periphytic algae, in the presence or absence of an intermediate consumer (zooplankton).
Ubirajara Lima Fernandes, Grasiela Casas, Taise Miranda Lopes, Leandra Palheta, Liliana Rodrigues, Bárbara Dunck   +5 more
doaj   +1 more source

Aquatic and Terrestrial Invertebrates Support Fish Assemblages of Amazonian Streams

Freshwater Biology, Volume 71, Issue 5, May 2026.
ABSTRACT The Amazonian stream network is remarkable not only for its extent but also for its rich fish diversity. These streams are interconnected with the surrounding forests. However, key ecological aspects of Amazonian freshwater ecosystems, such as energy flows and carbon sources sustaining fish assemblages, remain poorly understood. In this study,
Pedro H. S. Basilio, Cecília G. Leal, Débora R. de Carvalho, Gabriel L. Brejão, Dennys H. C. Drager, Gilberto N. Salvador, Marcos A. Alves‐Filho, Vladimir E. Costa, Gabriel O. Ferraz, Gustavo S. Ferreira, Rafael P. Leitão, Luciano F. A. Montag, Jady V. A. S Santos, Everton C. Silva, Paulo S. Pompeu   +14 more
wiley   +1 more source

Taxonomic study of Moenkhausia cotinho Eigenmann, 1908 and Hemigrammus newboldi (Fernández-Yépez, 1949) with the description of two new species of Moenkhausia (Teleostei: Characiformes: Characidae)

, 2020
Mathubara, Kleber, Toledo-Piza, Mônica (2020): Taxonomic study of Moenkhausia cotinho Eigenmann, 1908 and Hemigrammus newboldi (Fernández-Yépez, 1949) with the description of two new species of Moenkhausia (Teleostei: Characiformes: Characidae).
Mathubara, Kleber, Toledo-Piza, Mônica
core   +1 more source

Moenkhausia rubra, a new species from rio Juruena, upper rio Tapajós basin, Brazil (Characiformes: Characidae)

Neotropical Ichthyology
Moenkhausia rubra, new species, is described from the upper rio Juruena, rio Tapajós basin, Mato Grosso, Brazil. The new species is distinguished from its congeners, except M. hemigrammoidesand M.
Murilo N. L. Pastana, Fernando C. P. Dagosta   +1 more
doaj   +1 more source

Length-weight relationships of fish from sandy beaches

Brazilian Journal of Biology, 2021
This study estimated the length–weight relationships of 16 fish species occurring close to the shores of sandy beaches along the lower Negro River basin, Brazilian Amazon.
D. Olentino, C. C. F. Lubich, M. D. P. Rocha, J. H. N. Santos, T. Gomes, H. Beltrão, J. F. Silva, K. C. Yamamoto   +7 more
doaj   +1 more source