Results 51 to 60 of about 1,365 (216)
Gape size influences seasonal patterns of piscivore diets in three Neotropical rivers [PDF]
, 2011 We examined diets of four piscivores, two in the order Perciformes (Cichla temensis and C. orinocensis) and two in the order Characiformes (Boulengerella cuvieri and B.
Layman, Craig A., Montaña, Carmen G.
core
Aquaculture, 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
Conservation 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
A new Hyphessobrycon (Characiformes: Acestrorhamphidae) from the rio Mamuru basin, Amazonas State, Brazil [PDF]
Neotropical IchthyologyA 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
“Split Happens”: a Rare Case of Chromosomal Mosaicism in Characin from an Impacted River Basin [PDF]
Brazilian Archives of Biology and TechnologyChromosomal 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
Les stratégies de reproduction et les premiers stades de vie des poissons du fleuve Sinnamary (Guyane française) : une revue bibliographique [PDF]
, 1994 Le barrage hydro-électrique de Petit-Saut, construit par Electricité de France sur le fleuve Sinnamary en Guyane française, a été fermé en janvier 1994. Cet ouvrage a profondément modifié un milieu dont les éléments avaient co-évolué depuis de nombreuses
Ponton, Dominique, Tito de Morais, Luis
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The fish fauna of the Iwokrama Forest [PDF]
, 2005 Fishes were collected from the rivers in and around the Iwokrama Forest during January-February and November-December 1997. Four hundred species of fish were recorded from forty families in ten orders.
Arjoon, D +5 more
core +1 more source
Journal of Fish Biology, Volume 104, Issue 6, Page 1947-1959, June 2024.Abstract A new species of characid with remarkable sexual characteristics is described from the upper Guayabero River drainage from the Orinoco basin in Colombia. The new species is included in the genus Monotocheirodon by sharing most of the previously proposed diagnostic features of this genus.
Tiago P. Carvalho +3 more
wiley +1 more source
Brazilian Journal of BiologyClove oil is used as a fish anesthetic because it is a natural and inexpensive product with low toxicity risks. The goal of the present study was to determine the appropriate concentration of clove oil for small-sized tropical fish to be used in mark ...
I. M. Fernandes +4 more
doaj +1 more source
Ecology and Evolution, Volume 14, Issue 4, April 2024.Previous studies predominantly investigated eye regression in cavefish evolution, but less is known about constructive evolution of non‐visual sensory systems in subterranean species. This review highlights our state of knowledge on mechanosensory lateral line expansions in Astyanax mexicanus, emphasizing anatomical features, synaptic plasticity, and ...
Roberto Rodríguez‐Morales
wiley +1 more source