Results 191 to 200 of about 6,049 (231)

The genus Brycon Mller amp; Troschel (Ostariophysi: Characiformes: Bryconidae) of Esprito Santo State, Brazil: new records and comments on conservation.

Zootaxa, 2021
The occurrence of the species of the genus Brycon (Characiformes: Bryconidae) in Esprito Santo State is herein reviewed. Brycon opalinus, a species formerly known only from the upper rio Paraba do Sul and upper rio Doce basins, is recorded for the first ...
L. Rodrigues, Juliana Paulo da Silva, Flávio C. T. Lima, Leonardo Ferreira DA SILVA INGENITO, L. Duboc, Débora Ferreira Machado, L. M. Sarmento-Soares   +6 more
semanticscholar   +1 more source

The Description of a Rare and Critically Endangered Species of Ghost Knifefish from the Amazon Basin (Ostariophysi: Gymnotiformes: Apteronotidae)

Ichthyology & Herpetology, 2021
A new species of ghost knifefish is described from the Rio Uatumã at Cachoeira do Miriti, Amazon basin, Brazil. It is distinguished from all species of Apteronotus by the absence of a clear stripe from the chin to the dorsal portions of the head and/or ...
Luiz Antônio Wanderley Peixoto, G. Dutra, A. Datovo, N. Menezes, C. D. de Santana   +4 more
semanticscholar   +1 more source

Myanmar (Teleostei: Ostariophysi: Siluriformes: Erethistidae)

2003
Britz, Ralf, Ferraris, Carl J. (2003): Myanmar (Teleostei: Ostariophysi: Siluriformes: Erethistidae).
Britz, Ralf, Ferraris, Carl J.
openaire   +1 more source

Comparative Mitochondrial Features Across Characiformes (Teleostei: Ostariophysi) and Mitogenomic Architecture of Nematobrycon lacortei

Diversity
Characiformes, a highly diverse group, are of great economic and ecological significance; however, their complex morphological convergence and adaptive radiation pose challenges to taxonomy, and phylogenetic controversies remain.
Hongjian Chen, Wei Xu, Bing Liu, Lingna Li   +3 more
semanticscholar   +1 more source

New records and confirmations of freshwater fish (Teleostei, Ostariophysi) from Uruguay after flood pulses from the Paraná and Uruguay rivers

Check List
Based on fish monitoring programs in the Uruguay River held during the 2023–2024 flood pulse, we report for the first time the presence of the following four species in the Uruguay river basin: Hemiodus orthonops Eigenmann & Kennedy, 1903; Cynopotamus ...
I. González‐Bergonzoni, Ivana Silva, Cristhian Clavijo, Ricardo Juárez, Emilio Menvielle, Eugenio Lorenzo, Wiston Albieni, J. Bessonart, Edgardo Bevilacqua, Facundo Cortondo, A. Feris, J. Pais, Lucia Uruzula, Marcelo Loureiro   +13 more
semanticscholar   +1 more source

On the diploid state of the fish order Ostariophysi

Chromosoma, 1968
Our previous study on the order Ostariophysi was limited to members of the family Cyprinidae, suborder Cyprinidea. It was shown that the carp and the goldfish with 104 chromosomes and a DNA value of 50% that of mammals are tetraploid, as the diploid species of this family has 50–52 chromosomes and a 25% DNA value. In order to obtain some idea as to how
J I, Muramoto, S, Ohno, N B, Atkin
openaire   +2 more sources

Miniaturization in Alestidae (Ostariophysi: Alestidae)

2020
Alestidae (African tetras) is one of the most species-rich families of the order Characiformes and exhibits a pronounced diversity of body size. Two independent miniaturization events (a drastic phylogenetic decrease in body size) have been identified in Alestidae.
openaire   +1 more source

The Gill Arches of Psilorhynchus (Ostariophysi: Psilorhynchidae)

Copeia, 2007
Abstract Members of the genus Psilorhynchus are small cypriniform fishes adapted for life in the fast flowing streams of the Ganga–Brahmaputra drainage of India and Eastern Nepal and the Ayeyarwady drainage of Northern Myanmar and adjacent China. The systematic placement of Psilorhynchus within existing cypriniform classification schemes has been ...
Kevin W. Conway, Richard L. Mayden
openaire   +1 more source

Early Cenozoic Cyprinoids (Ostariophysi: Cypriniformes: Cyprinidae and Danionidae) from Sumatra, Indonesia

Journal of Vertebrate Paleontology, 2020
The Sangkarewang Formation of the Ombilin Basin in Sumatra, Indonesia, has been known for its fossil fishes for over 150 years, and a monograph on the fishes from freshwater deposits of the basin was published over 80 years ago.
A. Murray
semanticscholar   +1 more source

A new Corydoras (Ostariophysi: Siluriformes: Callichthyidae) with an unusual sexual dimorphism from the rio Juruena basin, Brazil.

Zootaxa, 2020
A new Corydoras is described from the rio Juruena system, upper rio Tapajós drainage, Amazon basin, Brazil. The new Corydoras is distinguished from all congeners by presenting a combination of a conspicuous broad vertical dark bar on head, at the level ...
F. Lima, M. Britto
semanticscholar   +1 more source