Results 51 to 60 of about 609 (192)

Hemigrammus arua, a new species of characid (Characiformes: Characidae) from the lower Amazon, Brazil

open access: yesNeotropical Ichthyology
A new Hemigrammus species is described from tributaries of the igarapé Juruti Grande and rio Arapiuns, lower rio Amazonas, Pará State, Brazil. The new species can be easily diagnosed from all its congeners, except from Hemigrammus stictus (Durbin), by ...
Flávio C. T. Lima   +2 more
doaj   +1 more source

Description of a new species of Moenkhausia (Characiformes: Characidae) from the upper Paraguay basin, Central Brazil, with comments on its phylogenetic relationships

open access: yesNeotropical Ichthyology, 2018
A new species of Moenkhausia is described from tributaries of the upper rio Sepotuba, Paraguay basin, Brazil. The new species is distinguished from its congeners by a combination of characters, including an inconspicuous oval-shaped vertically elongated ...
Ricardo Britzke   +3 more
doaj   +1 more source

The stream fish fauna from the rio Machado basin, Rondônia State, Brazil [PDF]

open access: yesCheck List, 2013
The rio Machado (also known as Ji-Paraná) is a tributary of the rio Madeira in the Amazon basin. Currently, the rio Madeira contains the greatest fish species richness of the world, with approximately 1,000 species.
Lilian Casatti   +4 more
doaj   +3 more sources

A new Hemigrammus (Characiformes: Acestrorhamphidae) from the rio Cuiabazinho drainages, upper rio Paraguai basin

open access: yesNeotropical Ichthyology
A new species of Hemigrammus is described from tributaries of the rio Cuiabazinho, upper rio Paraguai basin, Mato Grosso State, Brazil. It can be readily distinguished from all its congeners by a unique combination of characters, including a distinctive ...
Katiane Mara Ferreira   +2 more
doaj   +1 more source

Deep Learning Unlocks Behavioral Prediction and Neurobehavioral Decoding

open access: yesMed Research, Volume 2, Issue 2, Page 371-387, June 2026.
This review evaluates deep learning frameworks that surmount conventional limitations through high‐dimensional nonlinear modeling, spatiotemporal dependency capture, and multimodal information integration. Focusing on biological behavior forecasting and neural mechanism decoding, we delineate cutting‐edge applications, including real‐time action ...
Tianzhe Han   +5 more
wiley   +1 more source

Hemigrammus durbinae Ota 2015

open access: yes, 2022
Hemigrammus durbinae Ota, Lima & Pavanelli, 2015: 221, fig. 1. Paratypes: 6 lots, 259 specimens —NUP 6265, 10, 19.1–21.7 mm SL; NUP 9547, 1 c&s: Brazil, Mato Grosso, Chapada dos Guimarães boundary with Nobres, córrego Forquilha, tributary of rio Cuiabá, rio Paraguai basin, 14°41’00”S, 55°32’00”W, Nupélia staff, 24 Apr 2000.
De Oliveira, Rianne C.   +5 more
openaire   +1 more source

The Efficacy of Clove Seed Aqueous Extract as an Anesthetic Agent on the Stress Response of Mystus cavasius During Transportation

open access: yesAquaculture Research, Volume 2026, Issue 1, 2026.
Mystus cavasius (locally known as Gulsha) is a commercially important catfish in Bangladesh, typically transported live in oxygenated polythene bags without anesthetics, often resulting in severe stress, injuries, and high mortality. This study evaluated the efficacy of clove seed aqueous extract (CAE) as a natural anesthetic at different ...
Nafisa Khatun   +4 more
wiley   +1 more source

100‐year time series reveal little morphological change following impoundment and predator invasion in two Neotropical characids

open access: yesEvolutionary Applications, Volume 12, Issue 7, Page 1385-1401, August 2019., 2019
Abstract Human activities are dramatically altering ecosystems worldwide, often resulting in shifts in selection regimes. In response, natural populations sometimes undergo rapid phenotypic changes, which, if adaptive, can increase their probability of persistence.
Ilke Geladi   +5 more
wiley   +1 more source

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

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