Results 41 to 50 of about 15,148 (219)

Analysis of morphometric and meristic characteristics of three cichlid species in central Iraq: farmed and wild

open access: yesOceanological and Hydrobiological Studies
This study is designed to assess morphological dissimilarities between aquaculture and feral groups of three cichlid fish species, Coptodon zillii (Gervais, 1848), Oreochromis aureus (Steindachner, 1864), and Oreochromis niloticus (Linnaeus, 1758). Feral
Fatle Fatema Ali Al   +2 more
doaj   +1 more source

CLOFFAR - update 3 - supplement to Checklist of the Freshwater Fishes of Argentina [PDF]

open access: yes, 2017
In May 2016 we have published the second update to CLOFFAR and in these few months a total of 22 changes have summed up. The total number of fishes known from the freshwaters of Argentina has increased to 538, caused by one new Hoplias and 13 first ...
Koerber, Stefan   +2 more
core  

Global Patterns and Gaps in Research on Salinity Tolerance of Inland Fishes

open access: yesFish and Fisheries, Volume 27, Issue 2, Page 400-411, March 2026.
ABSTRACT Freshwater salinization is an emerging threat impacting approximately one‐third of the world's freshwater bodies. However, the salinity tolerance of many inland fishes remains understudied, despite being a crucial factor in determining species distributions and fitness.
Carlos Cano‐Barbacil   +4 more
wiley   +1 more source

Incidences of taillessness in Acanthopagrus arabicus and Oreochromis niloticus collected from the Shatt al-Arab River, Basrah, Iraq

open access: yesFisheries & Aquatic Life
Taillessness (the absence of the caudal fin and some of the caudal peduncle) is described in Acanthopagrus arabicus Iwatsuki and Oreochromis niloticus (L.) specimens collected from the Shatt al-Arab River, Basrah, Iraq.
Abed Jassim M.   +2 more
doaj   +1 more source

Assessment of Fish Biodiversity in Oni River, Ogun State, Nigeria [PDF]

open access: yesInternational Journal of Agricultural Management and Development, 2011
For the purpose of sustainable exploitation of the fishery resourcesof Oni River, Ogun State, Nigeria, the fish biodiversity assessment was carried out. This was conducted by enumerating and identifying fish species composition, measuring the fish length,
Obe Bernardine Wuraola   +1 more
doaj  

Genetic analysis of immunological traits in tilapia [PDF]

open access: yes, 2002
The immunological response to handling stress of four tilapia species is evaluated.Polymorphism is examined in genes known to influence immune response in ...
Cnaani, A.   +3 more
core  

Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil

open access: yesJournal of Fish Biology, Volume 108, Issue 2, Page 648-668, February 2026.
Abstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Lucas E. P. Kampfert   +5 more
wiley   +1 more source

Feeding and trophic ecomorphology of Satanoperca pappaterra (Pisces, Cichlidae) in the Manso Reservoir, Mato Grosso State, Brazil

open access: yesBrazilian Archives of Biology and Technology, 2005
The aim of this work was to evaluate the relationship between diet and features of the trophic ecomorphology of Satanoperca pappaterra (Heckel, 1840) in an impacted environment.
Norma Segatti Hahn, Fabiane Cunha
doaj   +1 more source

Trace metal distribution in tissues of cichlids (Oreochromis niloticus and O. mossambicus) collected from wastewater-fed fishponds in East Calcutta Wetlands, a Ramsar site [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2006
Background. Metals discharged in wastes from different industries into wetland ecosystems pose a serious threat to the receiving environment. Biotic components grown in the area amass such metals within their body through nutritional uptake and ...
S. Chatterjee   +2 more
doaj   +3 more sources

Water Parameters and Hydrodynamics in Rivers and Caves Hosting Astyanax mexicanus Populations Reveal Macro‐, Meso‐ and Microhabitat Characteristics

open access: yesEcology and Evolution, Volume 16, Issue 1, January 2026.
From 2009 to 2025, we have recorded the physicochemical parameters of the water and the hydrological regimes at localities hosting Astyanax mexicanus cavefish and surface fish populations in Mexico. Sampling 13 caves and 30 surface stations revealed strong signatures of the two macrohabitats, but also significant differences in specific water ...
Laurent Legendre   +5 more
wiley   +1 more source

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