Results 61 to 70 of about 3,770 (182)

Five new species of Hemibrycon (Characiformes: Characidae) from the Río Magdalena basin, Colombia

open access: yesRevista de Biología Tropical, 2010
Five new fish species of the genus Hemibrycon are described from the Río Magdalena basin, Colombia, using morphometric, meristic and osteological characters. Hemibrycon paez (n=40) differs in number of lateral line scales (39 to 42 vs.
César Román-Valencia   +1 more
doaj  

A Continuum of Biodiversity: Revealing Marine Tropical Fish Diversity From Intra‐ to Interspecific Variation Through Environmental DNA

open access: yesEnvironmental DNA, Volume 8, Issue 3, May–June 2026.
This study applies eDNA metabarcoding on conserved and hypervariable mitochondrial markers to assess species diversity in Caribbean marine fishes and population haplotype diversity in grunts. By standardizing biodiversity monitoring across scales, eDNA provides a unified understanding of the processes generating diversity patterns from populations to ...
Maurine Vilcot   +7 more
wiley   +1 more source

Sahyadria, a new genus of barbs (Teleostei: Cyprinidae) from Western Ghats of India

open access: yesJournal of Threatened Taxa, 2013
Redline Torpedo Barbs (Teleostei: Cyprinidae), comprising of two species, Puntius denisonii and P. chalakkudiensis, and six evolutionarily distinct lineages are endemic to the streams of the Western Ghats freshwater ecoregion in peninsular India.
R. Raghavan   +3 more
doaj   +1 more source

Morphology and Distribution of Olfactory Receptor Neurons in Southern Bluefin Tuna, Thunnus maccoyii (Teleostei): Implications for Olfactory Hydrodynamics

open access: yesJournal of Morphology, Volume 287, Issue 5, May 2026.
The number and distribution of olfactory receptors over the olfactory lamellar surface of four juvenile southern bluefin tuna were quantified using scanning electron microscopy. The microvillous olfactory receptors (mORN) are concentrated in the rostral region of the lamellar surface, while ciliated olfactory receptors (cORN), which are dominant in ...
Myoung‐Hoon Ha   +5 more
wiley   +1 more source

Alimentação de Bathygobius soporator (Valenciennes, 1837) (Actinopterygii: Teleostei: Gobiidae) na localidade de Cacha Pregos (Ilha de Itaparica), Bahia, Brasil

open access: yesBiotemas, 1998
Foram analisados os conteúdos gastro-intestinais de 268 indivíduos de B. soporator capturados entre junho de 1991 e setembro de 1992 em um manguezal na localidade de Cacha Pregos (sul da Ilha de Itaparica, Estado da Bahia, Brasil - cerca de 13º07'S ...
Paulo Roberto Duarte Lopes   +1 more
doaj  

Brain Morphology and Quantitative Assessment of Sensory Brain Areas in Southern Bluefin Tuna, Thunnus maccoyii (Scombridae, Teleostei)

open access: yesJournal of Comparative Neurology, Volume 534, Issue 4, April 2026.
The absolute and relative volume of major sensory and integrative brain regions of the southern bluefin tuna Thunnus maccoyii are examined using magnetic resonance imaging (MRI). A dominant cerebellum projects into the midbrain ventricular space, while the optic tectum represents a smaller proportion of total brain volume than previously estimated ...
Myoung Hoon Ha   +9 more
wiley   +1 more source

Mid-Cretaceous acanthomorph fishes with the description of a new species from the Turonian of Lac des Bois, Northwest Territories, Canada

open access: yesVertebrate Anatomy, Morphology, Palaeontology, 2016
A single specimen of a new acanthomorph fish is described from a Turonian locality sampling the northern part of the Cretaceous Western Interior Seaway.
Alison M Murray
doaj   +3 more sources

First record of Diaphus rafinesquii (Cocco, 1838) (Myctophidae) in the Norwegian Sea

open access: yesFauna Norvegica, 2013
The myctophid Diaphus rafinesquii is endemic in the North Atlantic and the Mediterranean and was for the first time found in the Norwegian Sea. The specimen was captured off northern Norway at about 71° N, representing the northernmost record so far ...
Rupert Wienerroither, Otte Bjelland
doaj   +1 more source

Teleostei, Scophthalmidae: four-spot megrim spotted in Norwegian waters

open access: yesFauna Norvegica, 2019
The flatfish four-spot megrim (Lepidorhombus boscii) was registered in Norwegian waters, both in trawl catches and video observations. The records represent a considerable northward extension of the species.
Rupert Wienerroither   +3 more
doaj   +1 more source

The haematozoa of Australian marine Teleostei

open access: yes, 1925
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Mackerras, I M, Mackerras, M Josephine
openaire   +1 more source

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