Results 51 to 60 of about 6,260 (178)

Three new species of Astyanax from drainages of southern Brazil (Characiformes: Characidae)

Neotropical Ichthyology
Three new species of Astyanax are described from southern Brazil: A. dissensus and A. xiru from the laguna dos Patos system and rio Uruguay basin, the first species also occurring in the rio Tramandaí system, and A.
Carlos A. S. de Lucena, Jonas Blanco Castro, Vinicius A. Bertaco   +2 more
doaj   +1 more source

Fish Sperm Subpopulations Detection, Separation, and Application: Current State and Trends

Reviews in Aquaculture, Volume 18, Issue 4, September 2026.
Modern advances in sperm biology highlight the necessity of recognising intra‐ejaculate heterogeneity as a central concept for advancing both the fundamental understanding of fertilisation processes and the development of artificial reproduction techniques in fishes. ABSTRACT Sperm subpopulations represent a fundamental manifestation of intra‐ejaculate
Viktoriya Dzyuba, William V. Holt, Borys Dzyuba   +2 more
wiley   +1 more source

Astyanax aeneus

, 2006
Astyanax aeneus: MLP 9662, (2) 1 male, 1 female, 66.0-75.0 mm SL, Las Flores stream, Mexico, March 1998.Published as part of Lucila C. Protogino, Amalia M. Miquelarena & Hugo L.
Lucila C. Protogino, Amalia M. Miquelarena, Hugo L. López   +2 more
core   +1 more source

Astyanax ojiara

, 2006
Astyanax ojiara: MLP 9470, holotype, 50.5 mm, Argentina, Misiones, arroyo Benítez.Published as part of J. M. Mirande, G. Aguilera & M. D. L. M. Azpelicueta, 2006, Astyanax endy (Characiformes: Characidae), a new fish species from the upper Río Bermejo ...
M. D. L. M. Azpelicueta, G. Aguilera, J. M. Mirande   +2 more
core   +2 more sources

Combined Effects of Algae‐Supplemented Feeding Regimes and Water Temperature on Sperm Quality of Common Carp (Cyprinus carpio) Broodstock During Spawning

Aquaculture, Fish and Fisheries, Volume 6, Issue 4, August 2026.
ABSTRACT This exploratory study investigated associations between dietary algae supplementation (1% and 3%) and sperm quality in male common carp (Cyprinus carpio) broodstock during two consecutive spawning seasons under commercial farming conditions. Sperm quality was evaluated using conventional motility and kinetic parameters together with analyses ...
Gergely Bernáth, Borbála Nagy, Enikő Solymosi, Tamás Zsáky, Ákos Koós, Attila Komóczi, Viktor Nagy, Vilmos Pásztor, János Sztanó, János Ladányi, György Lódi, Péter Antal, Tamás Szabó, Tamás Bartucz, Dávid Várkonyi, Zsolt Bajári, István Bartos, Róbert Petényi, Gergely Berecz, Márton Kirchner, Béla Urbányi, Árpád István Harmati, Zoltán Bokor   +22 more
wiley   +1 more source

Astyanax tumbayaensis

, 2007
Astyanax tumbayaensis: CI-FML 3845, 15 ex., 57.1-75.8 mm, Argentina, Jujuy, Arroyo de los Sauces, Quebrada de Humahuaca, Río Grande basin.Published as part of Juan Marcos Mirande, Gastón Aguilera & María de las Mercedes Azpelicueta, 2007, A new species ...
María de las Mercedes Azpelicueta, Gastón Aguilera, Juan Marcos Mirande   +2 more
core   +1 more source

Astyanax henseli, a new name for Tetragonopterus aeneus Hensel, 1870 from southern Brazil (Teleostei: Characiformes)

Neotropical Ichthyology
Tetragonopoterus aeneus Hensel (1870) is removed from synonymy with Astyanax fasciatus (Cuvier, 1819), revalidated and redescribed as A. henseli to avoid homonymy. Astyanax henseli differs from A. fasciatus stricto sensu and other Astyanax species by the
Filipe A. G. de Melo, Paulo A. Buckup
doaj   +1 more source

Diet and dietary overlap of three sympatric fish species in lakes of the upper Paraná River floodplain

Brazilian Archives of Biology and Technology, 1999
For a dietary study, specimens of Astyanax bimaculatus, Astyanax schubarti, and Moenkhausia intermedia were caught monthly with seines-nets in six lakes (Pau Veio, Porto Rico, Três Amigos, Mutum, Pontal, and Canal do Meio), on the floodplain of the Upper
Karla Danielle Gaspar da Luz, Edson Kiyoshi Okada   +1 more
doaj   +1 more source

A Recessive oca2 Mutation Underlies Albinism in Xiphophorus Fish

Pigment Cell &Melanoma Research, Volume 39, Issue 4, July 2026.
Genetic mapping of albino Xiphophorus hellerii showed that albinism is associated with a recessive oca2 variant. This variant leads to early termination of the Oca2 protein. This study identifies a novel model system to investigate conserved mechanisms of pigmentation biology.
Yanting Xing, William Boswell, Jessica Parker, Kang Du, Manfred Schartl, Yuan Lu   +5 more
wiley   +1 more source

Astyanax troya

, 2007
Astyanax troya: MACN 8310, holotype, 73.8 mm, Argentina, Misiones, Arroyo Cunapiru Chico.Published as part of Juan Marcos Mirande, Gastón Aguilera & María de las Mercedes Azpelicueta, 2007, A new species of Astyanax (Characiformes: Characidae) from the ...
María de las Mercedes Azpelicueta, Gastón Aguilera, Juan Marcos Mirande   +2 more
core   +1 more source