Results 51 to 60 of about 292 (171)

Fish fauna of small streams of the Catua-Ipixuna Extractive Reserve, State of Amazonas, Brazil [PDF]

open access: yesCheck List, 2009
This study was conducted in an Amazonas state conservation unit, the Catuá-Ipixuna Extractive Reserve (Catuá-IpixunaRESEX). The main purpose was to provide an ichthyological survey of its small streams, all them tributaries of theSolimões River.
Py-Daniel, L. H. R.   +4 more
doaj   +4 more sources

Aquatic macrophytes as feeding site for small fishes in the Rosana Reservoir, Paranapanema River, Southeastern Brazil [PDF]

open access: yesBrazilian Journal of Biology, 2003
In the present investigation we studied the feeding habits of the fishes associated with aquatic macrophytes in the Rosana Reservoir, southeastern Brazil.
L. Casatti, H. F. Mendes, K. M. Ferreira
doaj   +1 more source

Hemigrammus unilineatus

open access: yes, 2007
Hemigrammus unilineatus MZUSP 30323 (1 ex. 33.6 mm SL), Brasil, Rio Branco, Cachoeira Bern Querer, M. Goulding, 08/01/1984;
Ricardo C. Benine, Guilherme A. M. Lopes
openaire   +1 more source

Synchronization and collective swimming patterns in fish (Hemigrammus bleheri) [PDF]

open access: yesJournal of The Royal Society Interface, 2016
In this work, we address the case of red nose tetra fishHemigrammus bleheriswimming in groups in a uniform flow, giving special attention to the basic interactions and cooperative swimming of a single pair of fish. We first bring evidence of synchronization of the two fish, where the swimming modes are dominated by ‘out-phase’ and ‘in-phase ...
Ashraf, I.   +4 more
openaire   +4 more sources

Earthworm (Eisenia Fetida) Meal as Fishmeal Replacement in the Diet of Oreochromis Niloticus (Linnaeus, 1758) Fingerlings

open access: yesAquaculture, Fish and Fisheries, Volume 5, Issue 4, August 2025.
ABSTRACT With the rising cost and ecological impact of traditional fishmeal, there is an urgent need for sustainable and locally available alternative protein sources in aquaculture. This study evaluated the effectiveness of Eisenia fetida meal as a sustainable protein substitute for fishmeal in the diets of Oreochromis niloticus fingerlings under ...
Belay Abdissa   +2 more
wiley   +1 more source

A new Hyphessobrycon (Characiformes: Acestrorhamphidae) from the rio Mamuru basin, Amazonas State, Brazil [PDF]

open access: yesNeotropical Ichthyology
A new species of Hyphessobrycon from the rio Mamuru basin, Pará State, Brazil, is described. The new species is similar to two congeners, Hyphessobrycon hildae and Hy. taguae, and to a non-congener, Hemigrammus bellottii, by the presence of a conspicuous,
Tiago C. Faria   +3 more
doaj   +1 more source

Hemigrammus schmardae

open access: yes, 2007
Hemigrammus cf. schmardae MZUSP 92141 (1 ex. 18.0 mm SL), Brasil, Amazonas, Rio Negro, Rio Tiquié, Serra do Mucura community, Flávio C. T. Lima et al., 10/09/2006.
Ricardo C. Benine, Guilherme A. M. Lopes
openaire   +2 more sources

Fish distribution across altitudinal gradients in the Upper Paraguay River Basin: Implications for conservation in the Pantanal region

open access: yesConservation Science and Practice, Volume 7, Issue 7, July 2025.
This paper approaches the patterns in fish distribution across the altitudinal gradient in the Upper Paraguay River basin, from uplands to the floodplain. We compiled more than 75,000 available fish records and registered 342 fish species and your distribution along altitudinal gradient. Floodplain portion have higher species diversity than headwaters,
Adriana Maria Espinoza Fernando   +11 more
wiley   +1 more source

“Split Happens”: a Rare Case of Chromosomal Mosaicism in Characin from an Impacted River Basin [PDF]

open access: yesBrazilian Archives of Biology and Technology
Chromosomal polymorphisms have been reported in numerous vertebrates, including fishes. Such variation is usually related to karyoevolutionary trends and speciation but might also be a result of environmental stress.
Mauricio Barros Fernandes   +4 more
doaj   +1 more source

Hemigrammus bellottii

open access: yes
Hemigrammus bellottii (Steindachner 1882) Distribution Western Amazonia.
Escobar-Camacho, Daniel   +4 more
openaire   +2 more sources

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