Results 81 to 90 of about 14,761 (221)

Dimensions of dace dynamics: temporal variation in abundance and survival of an imperiled desert fish guide habitat restoration

open access: yesRestoration Ecology, EarlyView.
Abstract Introduction Desert fishes are vulnerable to anthropogenic environmental alterations that degrade habitat and reduce water availability, but these same fishes benefit from restoration actions that reverse the causes of decline. Ash Meadows speckled dace (Rhinichthys osculus nevadensis) is a federally endangered minnow endemic to the Mojave ...
Jacob P. Wolff   +5 more
wiley   +1 more source

Trophic Redundancy and the Hidden Dietary Overlap Between Native and Invasive Stream Fishes

open access: yesEcology of Freshwater Fish, Volume 35, Issue 3, July 2026.
ABSTRACT Biological invasions introduce non‐native species into natural ecosystems, often reshaping localcommunities and altering trophic interactions. In freshwater environments, such invasions can intensify resource use and threaten native fish diversity.
Ronielson Gaia   +6 more
wiley   +1 more source

Isolation of Tetrahymena pyriformis From Several Infected Pet Fish Species And a Regime For Its Treatment

open access: yesThe Iraqi Journal of Veterinary Medicine, 2005
Tetrahymena pyriformis has been firstly isolated from brood Goldfish (Carassius auratus) Common, Fantail, Ryukin, Veiltail and Moor, Black molly (Poecilia sphenops), Gourami (Trichogaster trichopterus), red Swordtail (Xiphophorus helleri), Guppy ...
Omar Bassim Ahmed Al- Tayyar
doaj   +1 more source

Impacts of Salinity on Growth, Physiology and Tissue Integrity of Nile Tilapia: Implications for Coastal Aquaculture Under Climate Change

open access: yesAquaculture, Fish and Fisheries, Volume 6, Issue 3, June 2026.
ABSTRACT Climate change is responsible for salinity intrusion in coastal areas, which is significantly threatening the sustainability of aquaculture. This investigation focused on evaluating growth performance, proximate composition, blood morphology and histopathological modifications in Nile tilapia (Oreochromis niloticus) exposed to varying salinity
Shakil Ahmed   +5 more
wiley   +1 more source

Investigations into the bioavailability of manufactured nanoparticles in fish [PDF]

open access: yes, 2013
The field of nanotoxicology has emerged as a discipline in parallel with the rapid expansion of nanotechnology and the use of nanomaterials in modern life.
Goodhead, Rhys Michael
core  

Genetic improvement of variety pattern chromatic Half BlackBlue or Diamond of ornamental fish Guppy (Poecilia reticulata; Peters, 1859) through mass selection

open access: yesScientia Agropecuaria, 2011
This article provides a standard computerized digitized based on the number of pixels. They found eight characteristic blue color tones in both the body and dorsal fin to be used in the potential for mass selection breeding color pattern of the ...
Carlos Scotto Espinoza
doaj   +3 more sources

Plant‐Derived Treatments for Monogenean Parasites in Farmed Fish: A Systematic Review and Meta‐Analysis

open access: yesReviews in Aquaculture, Volume 18, Issue 3, June 2026.
ABSTRACT Monogeneans are among the most problematic ectoparasites in finfish aquaculture. Plant‐derived compounds have been widely explored as therapeutic agents, yet their efficacy and safety have not been quantitatively synthesized across studies. This study provides a meta‐analysis of plant‐based treatments against monogeneans, integrating 453 in ...
Francisco Neptalí Morales‐Serna
wiley   +1 more source

Individual variation in perceived density of conspecifics and its impacts on the realization of ecological niches

open access: yesOikos, Volume 2026, Issue 5, May 2026.
Animals gather information about their surroundings, including their social environment, using a wide range of sensory modalities. Variation in reception, processing and interpretation of information (cues or signals) can lead to differences in how individuals perceive their local environment. Yet, how individual differences in environmental perception
Ane Liv Berthelsen   +13 more
wiley   +1 more source

Population structure of fishes from an urban stream

open access: yesActa Scientiarum: Biological Sciences, 2017
  The aim of this study was to identify the population structure of the ichthyofauna in an urban stream within an environmental protection area in southern Brazil. Quarterly samplings were conducted between October 2009 and August 2010.
Naiara Zanatta   +4 more
doaj   +1 more source

Functional response predicts invasiveness but not trophic impact

open access: yesJournal of Animal Ecology, Volume 95, Issue 5, Page 808-823, May 2026.
This comparative analysis challenges the current paradigm that pre‐invasion functional response magnitude serves as a reliable predictor of post‐invasion ecological impact and highlights the need to distinguish between pre‐adaptation in native ranges and realized performance in invaded ecosystems.
Marine A. Courtois   +5 more
wiley   +1 more source

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