Results 91 to 100 of about 2,788 (258)

Reappraisal of Rhamdia branneri Haseman, 1911 and R. voulezi Haseman, 1911 (Siluriformes: Heptapteridae) from the rio Iguaçu with notes on their morphometry and karyotype

Neotropical Ichthyology
The species Rhamdia branneri Haseman, 1911 and the subspecies Rhamdia branneri voulezi Haseman, 1911 from rio Iguaçu are currently recognized as synonyms of Rhamdia quelen (Quoy & Gaimard, 1824).
Julio Cesar Garavello, Oscar Akio Shibatta   +1 more
doaj   +1 more source

Fishes from the Upper Cretaceous Prince Creek Formation, North Slope of Alaska, and their palaeobiogeographical significance

Papers in Palaeontology, Volume 11, Issue 3, May/June 2025.
Abstract The Upper Cretaceous Prince Creek Formation (PCF) of northern Alaska offers a unique glimpse into northern high‐latitude, non‐marine vertebrate assemblages, providing critical data on polar ecosystems during the late Campanian (c. 73 Ma).
Donald B. Brinkman, J. Andrés López, Gregory M. Erickson, Jaelyn J. Eberle, Xochitl Muñoz, Lauren N. Wilson, Zackary R. Perry, Alison M. Murray, Lisa Van Loon, Neil R. Banerjee, Patrick S. Druckenmiller   +10 more
wiley   +1 more source

Canals and pores of the cephalic laterosensory system of Characiformes (Ostariophysi): anatomy and its phylogenetic information. [PDF]

, 2014
O sistema látero-sensorial dos peixes é responsável, dentre outras funções, pela percepção de vibrações e de movimentos na água. A unidade funcional desse sistema é denominada neuromasto, o qual pode estar presente na superfície ou em ranhuras da pele ...
Murilo Nogueira de Lima Pastana, Pastana, Murilo Nogueira de Lima   +1 more
core   +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

Molecular phylogenetics, a new classification, and a new genus of the Neotropical fish family Anostomidae (Teleostei: Characiformes) [PDF]

Neotropical Ichthyology
Phylogenetic reconstruction of the Neotropical freshwater fish family Anostomidae using multilocus sequence data from 97 species supports the recognition of three subfamilies: Leporellinae with one genus, Anostominae with six genera, and Leporininae with
Brian L. Sidlauskas, Bruno F. Melo, José L. O. Birindelli, Michael D. Burns, Benjamin W. Frable, Kendra Hoekzema, Casey B. Dillman, Mark H. Sabaj, Claudio Oliveira   +8 more
doaj   +1 more source

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

New species of Moenkhausia Eigenmann (Ostariophysi: Characidae) from the upper rio Tocantins basin in Central Brazil [PDF]

, 2011
Fig. 1. Moenkhausia dasalmas, holotype, UFRGS 11221, 42.9 mm SL, tributary of rio das Almas, Cavalcante, Goiás, Brazil.Published as part of Bertaco, Vinicius A., Jerep, Fernando C.
Jerep, Fernando C, Bertaco, Vin\uedcius Ara\ufajo., Carvalho, Fernando Rog\ue9rio de, Jerep, Fernando C., Carvalho, Fernando R., Bertaco, Vinicius A.   +5 more
core   +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

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