Results 21 to 30 of about 634 (155)

Molecular characterization of Moenkhausia (Pisces: Characiformes) populations with different lateral line developmental levels

open access: yesAnais da Academia Brasileira de Ciências, 2018
The genera Hemigrammus and Moenkhausia have been traditionally diagnosed mainly by the former having lateral line completely pored whereas the latter having a lateral line with a few pored scales. Those features have been used to diagnose species of both
THAÍS F.M. MOTA   +7 more
doaj   +1 more source

A context analysis of bobbing and fin‐flicking in a small marine benthic fish

open access: yesEcology and Evolution, Volume 11, Issue 3, Page 1254-1263, February 2021., 2021
In fish, repeatedly and rapidly raising and lowering the anterior part of the body (bobbing) and repeated flicks of the dorsal, pectoral, or pelvic fins (fin‐flicking) are common behaviors often studied in the context of predation. We show that such behavioral traits can have other than an antipredator function in small marine triplefins.
Matteo Santon   +3 more
wiley   +1 more source

Taxonomic review and osteology of the species complex Hemigrammus geisleri Zarske & Géry (Characiformes: Characidae) [PDF]

open access: yes, 2022
Em grupos de peixes extremamente diversos, com relações de parentesco entre as espécies ainda não são esclarecidas, como o gênero Hemigrammus, atualmente com 61 espécies válidas, diferentes espécies, com base em características morfológicas semelhantes ...
Reis, Karolina Eriza
core   +1 more source

Food Habits of Five Fish Species from A Blackwater Creek in The Colombian Amazon

open access: yesMundo Amazónico, 2023
To provide baseline life history information for some of the many small fishes found in blackwater forest streams in the Colombian Amazon near the town of Leticia, we describe trophic aspects of five species of fishes.
Edgar Francisco Prieto Piraquive   +4 more
doaj   +1 more source

Length-weight relationship of four species of ornamental fish from the lower Rio Negro basin in the Brazilian Amazon

open access: yesActa Scientiarum: Biological Sciences, 2022
The present study describes the length-weight relationship of four species of ornamental fish caught on the banks of Tupé lake in lower Rio Negro, Amazonas state, Brazil in the months of September and December 2017, and February, March, and April 2018 ...
Daniel Olentino   +3 more
doaj   +1 more source

Ichthyofauna of the rio Araguaia basin, states of Mato Grosso and Goiás, Brazil [PDF]

open access: yesCheck List, 2014
This study provides a list of fish species from tributaries of the rio Araguaia basin, in its upper-middle portions in the states of Mato Grosso and Goiás, Brazil.
Lucas Ribeiro Jarduli   +2 more
doaj   +3 more sources

Hydrological Connectivity Enhances Fish Biodiversity in Amazonian Mining Ponds: Insights From eDNA and Traditional Sampling. [PDF]

open access: yesMol Ecol
ABSTRACT Artisanal and small‐scale gold mining (ASGM) expansion in the Madre de Dios region of the Peruvian Amazon has transformed primary forests into a novel wetland complex of thousands of abandoned mining ponds. Despite their ecological relevance, post‐mining recovery of these systems remains understudied, particularly regarding fish biodiversity ...
Timana-Mendoza C   +7 more
europepmc   +2 more sources

The stream fish fauna of a pristine area in the South Amazon, rio Machado basin, Rondônia [PDF]

open access: yesPapéis Avulsos de Zoologia
This study represents an inventory of fish collected in six small tributaries from the rio Tarumã river, in the Jaru Biological Reserve, middle rio Machado, Vale do Anari town, Rondônia, Brazil.
Willian Massaharu Ohara   +2 more
doaj   +1 more source

The Complete Mitogenome of Amazonian Hyphessobrycon heterorhabdus (Characiformes: Characidae) as a Valuable Resource for Phylogenetic Analyses of Characidae

open access: yesFishes, 2023
Hyphessobrycon heterorhabdus (Ulrey, 1894), popularly known as ‘Flag Tetra’ in English speaking countries, belongs to the genus Hyphessobrycon of the family Characidae, and is widely present in the eastern Amazon basin.
Luciano Fogaça de Assis Montag   +16 more
doaj   +1 more source

Food resource used by small-sized fish in macrophyte patches in ponds of the upper Paraná river floodplain - DOI: 10.4025/actascibiolsci.v31i2.3266

open access: yesActa Scientiarum: Biological Sciences, 2009
This study analyzed the diet of seven small-sized fish species (Characidae) and assessed their use of food resources. The species were collected in 2001 from nine ponds with aquatic macrophytes in the Paraná river floodplain, Brazil. Astyanax altiparanae,
Valdirene Esgarbosa Loureiro Crippa   +2 more
doaj   +1 more source

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