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fish

One orange fish chases another in water.
Posted inNews

Young Salmon in British Columbia Are Getting Bigger

by Carolyn Wilke 12 February 202412 February 2024

A rediscovered catalog of sockeye scales gave researchers access to century-old fish DNA.

Photo of a large dam in a river.
Posted inEditors' Vox

River Damming: How it Harms Fish and What Can Be Done

by Qiuwen Chen, Jianyun Zhang and Qinyuan Li 19 January 202418 January 2024

The severe impacts of river damming on fish habitats have aroused widespread attention, prompting major conservation measures to help mitigate these negative effects.

A fish swims above a green mat.
Posted inNews

Flash Floods May Support One of the World’s Rarest Fish

by Alix Soliman 5 January 20245 January 2024

Only a few hundred Devils Hole pupfish live in an isolated pool in the desert, where occasional floodwaters roil their habitat.

Geohealth research flowchart.
Posted inEditors' Highlights

Connecting the Dots Between Geohealth Research and Health Policy

by Gabriel Filippelli 27 September 202326 September 2023

Geohealth research is typically focused on environment-health impacts, but including physical and social mechanisms, and health and non-health trade-offs, can result in better policy benefits.

A shallow, narrow creek cuts through the backyard of a home.
Posted inNews

Hypoxia Affects One in Eight Rivers Worldwide

by J. Besl 19 April 202319 April 2023

A global study found dangerously low levels of dissolved oxygen in rivers around the world. The true prevalence of hypoxia is probably even higher.

A photo of tiny rocks mixed with several flakes of gold
Posted inNews

In New Zealand, Fish Are Helping Scientists Find Gold

by Bill Morris 22 March 202322 March 2023

Enormous amounts of gold lie buried beneath the rubble of New Zealand’s mountains, and scientists are using freshwater fish genetics to find it.

A school of anchovies swims in shallow water in the Bahamas.
Posted inNews

Tiny Creatures May Play a Difficult-to-Detect Role in Ocean Mixing

by Carolyn Wilke 20 May 202227 March 2023

As an idea that began as a joke, critter-driven ocean mixing has long been controversial. Now scientists have caught spawning anchovies causing turbulence and stirring the sea.

A school of silver marine fish in the Maldives
Posted inNews

Ancient Fish Thrived During a Period of Rapid Global Warming

by Elyse DeFranco 14 December 202114 December 2021

Teeth and scales preserved in marine sediments suggest that fish thrived during one of Earth’s fastest-warming periods.

A group of snailfish, animals that live in deep-sea ecosystems, feeding on a dead fish
Posted inNews

Sinking Fish May Fast-Track Mercury Pollution to the Deep Sea

by Carolyn Wilke 22 December 202018 March 2022

Isotopic analysis indicates that mercury found in deep-sea organisms may have an origin in carrion from near the surface.

Two oil-drilling platforms off the Long Beach, Calif., coast
Posted inNews

Los Costos Ecológicos de Remover las Plataformas Petroleras Mar Adentro en California

Katherine Kornei, Science Writer by Katherine Kornei 26 August 202014 March 2023

Las plataformas de perforación de petróleo- y gas-mar adentro son hábitats ricos para peces. Eliminarlas por completo resultaría en una pérdida del 95% de biomasa de peces, revela una nueva investigación.

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6 May 20256 May 2025
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