Results 51 to 60 of about 634 (155)

Hemigrammus ataktos

, 2016
Hemigrammus ataktos: MZUSP 113725, holotype, 37.7 mm SL, MZUSP 113724, 18, 17.1–36.3 mm SL, paratypes, Rio Tocantins basin.Published as part of Fernando C. P. Dagost, anoela M. F. Mar, cila Cam & ávio C. T.
anoela M. F. Mar, ávio C. T. Li, Fernando C. P. Dagost, cila Cam   +3 more
core   +1 more source

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

Brazilian 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

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

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, Melkamu Gete, Endalew Alemu   +2 more
wiley   +1 more source

Taxonomic revision of the species within Hemigrammus Gill, 1858 (Characiformes: Characidae) from rio Paraguai basin.

, 2010
A revision of the species within Hemigrammus from rio Paraguai basin was conducted, involving the analysis of about 1330 specimens of Hemigrammus. Five species were redescribed: H. lunatus, H. mahnerti, H. neptunus, H. tridens and H.
Ota, Rafaela Priscila
core   +2 more sources

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

Neotropical 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, Claudio Oliveira, Iann Leonardo Pinheiro Monteiro, Flávio César Thadeo de Lima   +3 more
doaj   +1 more source

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

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, Francisco Severo‐Neto, Fabiane Silva Ferreira, Lúcia Mateus, Karina K. Tondato‐Carvalho, Elaine Antoniassi Luiz Kashiwaqui, Heriberto Gimenes Junior, Wladimir M. Domingues, Carla Simone Pavanelli, Henrique Ledo Lopes Pinho, Jerry Penha, Yzel Rondon Súarez   +11 more
wiley   +1 more source

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

Brazilian 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, Jamille de Araújo Bitencourt, José Henrique Galdino, André Teixeira da Silva, Paulo Roberto Antunes de Mello Affonso   +4 more
doaj   +1 more source

The efficacy of clove oil as an anaesthetic and in euthanasia procedure for small-sized tropical fishes

Brazilian Journal of Biology
Clove 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, Y. F. Bastos, D. S. Barreto, L. S. Lourenço, J. M. Penha   +4 more
doaj   +1 more source

A new characid species with remarkable sexual dimorphism (Characiformes: Characidae: Stevardiinae) from the upper Guayabero River, Orinoco basin, Colombia

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, Andréa Tonolli Thomaz, Alexander Urbano‐Bonilla, Saúl Prada‐Pedreros   +3 more
wiley   +1 more source

Trophic ecology and condition factor of two sympatric species of Hemigrammus from a stream of the Negro River Basin, Brazilian Amazon

Brazilian Journal of Biology
This study aimed to evaluate the diet and condition factor of Hemigrammus levis and Hemigrammus coeruleus in a stream in the Tupé Sustainable Development Reserve, in the lower Negro River region, and contribute information on the biology of small species
M. Garrido, C. Lubich, K. C. Yamamoto
doaj   +1 more source