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fish

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.

Metal and concrete salmon pools at Oregon’s McKenzie River Hatchery
Posted inNews

Internal Compass Guides Salmon’s Incredible Journey

Mary Caperton Morton, Science Writer by Mary Caperton Morton 9 June 202019 July 2022

New study finds evidence that magnetite particles play a role in fish navigation.

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

The Ecological Costs of Removing California’s Offshore Oil Rigs

Katherine Kornei, Science Writer by Katherine Kornei 5 March 202014 March 2023

Offshore oil- and gas-drilling platforms are rich habitats for fish, and removing them completely would result in a loss of over 95% of fish biomass, new research has revealed.

One person’s hands hold a mahi-mahi while another person uses instruments to tag it.
Posted inNews

Oil-Exposed Mahi-Mahi More Likely to Lose Oil-Avoidance Behavior

Rachel Crowell, Science Writer by R. Crowell 30 January 202018 May 2022

Contact with oil may make it harder for the fish to avoid additional exposure, creating a vicious cycle following offshore oil spills.

A crew in safety vests uses nets and holding tanks to rescue salmon from the Fraser River
Posted inNews

Remote Landslide Puts Fraser River Salmon on Shaky Ground

Lesley Evans Ogden, Science Writer by Lesley Evans Ogden 22 January 20205 January 2023

An alliance of First Nations, provincial, and federal leaders worked with scientists, engineers, and emergency responders to rescue critical salmon stocks in western Canada.

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