Results 51 to 60 of about 672 (177)

Precaudal Vertebrae in the Postcranial Region of Moray Eels Form Ventral Processes

Journal of Morphology, Volume 285, Issue 10, October 2024.
The precaudal vertebrae in the postcranial region of moray eels form ventral processes with blood vessels. ABSTRACT Fish vertebrae are primarily morphologically classified into precaudal vertebrae jointed to the ribs and caudal vertebrae with hemal spines, through which the caudal artery and veins pass.
Yuu Usui, Naoki Yamane, Akira Hanashima, Ken Hashimoto, Yuji Kanaoka, Satoshi Mohri   +5 more
wiley   +1 more source

Hyphessobrycon nicolasi (Teleostei: Characidae) a new species from the Uruguay River basin in the Mesopotamian Region, Argentina

Neotropical Ichthyology
Hyphessobrycon nicolasi is described from the Uruguay River basin in the Mesopotamian Region, Entre Ríos, Argentina. The new species can be distinguished from all congeners by the presence of a well-defined oblique and marginal black stripe on each lobe ...
Amalia M Miquelarena, Hugo L López
doaj   +1 more source

Iterative taxonomy reveals a new species of Cambeva (Siluriformes: Trichomycteridae) with intraspecific variation from the rio Piquiri and Ivaí basin, upper rio Paraná basin, Brazil [PDF]

Neotropical Ichthyology
A new species of Cambeva occurring in the rio Piquiri and Ivaí, upper rio Paraná basin, Brazil, is described using the combination of morphological and molecular data. The new species is distinguished from most congeners by the presence of a notch in the
Isadora Carolina Martins, Renan Borges dos Reis, Bruno Henrique Mioto Stabile, Weferson Júnio da Graça   +3 more
doaj   +1 more source

The problems with pin bones: Intermuscular bone development and function in salmonids and their implications for aquaculture

Reviews in Aquaculture, Volume 16, Issue 4, Page 1981-1995, September 2024.
Abstract A healthy skeletal system is fundamental to fish welfare and performance and a key physiological feature of a robust fish. The presence of skeletal deformities in farmed salmonids is a persistent welfare problem in aquaculture, and one which threatens to impede industry growth.
Brianne A. Lyall, P. Eckhard Witten, Chris G. Carter, Matthew R. Perrott, Jane E. Symonds, Seumas P. Walker, Zac Waddington, Gianluca Amoroso   +7 more
wiley   +1 more source

Description of a new species of the genus Leporinus Spix (Characiformes: Anostomidae) from the rio Araguaia, Brazil, with comments on the taxonomy and distribution of L. parae and L. lacustris

Neotropical Ichthyology
A new species of the genus Leporinus is described from the rio Araguaia, in Mato Grosso and Goiás states, Brazil. The new species has the dental formula 4/3, a unique feature within the genus; all other species of Leporinus have dental formulae 3/3, 3/4 ...
Heraldo A. Britski, José L. O. Birindelli   +1 more
doaj   +1 more source

Telencephalic eversion in embryos and early larvae of four teleost species

Evolution &Development, Volume 26, Issue 2, March 2024.
The telencephalon of ray‐finned fishes undergoes eversion, not evagination as in the rest of vertebrates. We show that the formation of the ventricle followed by a rostro‐caudal telencephalic expansion is key for the formation of an everted telencephalon in teleosts.
Mónica Folgueira, Jonathan D. W. Clarke
wiley   +1 more source

A taxonomic review of the species of CharaxScopoli, 1777 (Teleostei: Characidae: Characinae) with description of a new species from the rio Negro bearing superficial neuromasts on body scales, Amazon basin, Brazil

Neotropical Ichthyology
The species of Charaxwere reviewed by Lucena (1987) who a little later (1989) added three new species to the genus. Examination of recently collected specimens from museum collections documented the more extensive geographic distribution for most species
Naércio A. Menezes, Carlos Alberto S. de Lucena   +1 more
doaj   +1 more source

Phylogenetic relationships of the enigmatic Carlastyanax aurocaudatus (Eigenmann) with remarks on the phylogeny of the Stevardiinae (Teleostei: Characidae)

Neotropical Ichthyology
The monotypic genus Carlastyanax Géry was defined to include Astyanax aurocaudatus, a morphologically odd species having, among other features, four teeth in the posterior premaxillary row and eight branched dorsal-fin rays. Later on, the characters used
Juan Marcos Mirande, Fernando Camargo Jerep, James Anyelo Vanegas-Ríos   +2 more
doaj   +1 more source

New species of the genus Leporinus Agassiz (Characiformes: Anostomidae) from the rio Curuá, rio Xingu basin, Serra do Cachimbo, Brazil, with comments on Leporinus reticulatus

Neotropical Ichthyology
A new species of Leporinus Agassiz is described from the rio Curuá, a tributary of the rio Iriri, rio Xingu basin, Serra do Cachimbo, Pará State, Brazil.
José L. O. Birindelli, Heraldo A. Britski   +1 more
doaj   +1 more source

Les Cheirodontinae (Characidae, Ostariophysi) du Paraguay

Revue suisse de zoologie., 1987
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources