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Articles on Fish

Displaying 121 - 140 of 403 articles

A sea cucumber living on the Great Barrier Reef inter-reef seafloor. Kent Holmes/Nature Ecology and Evolution

Life on the hidden doughnuts of the Great Barrier Reef is also threatened by climate change

We are only just beginning to understand the importance of this deep and hidden area of the inter-reef that supports a rich diversity of marine life.
Jeffrey Shima

Under the moonlight: a little light and shade helps larval fish to grow at night

Young fish need to find food to grow, but avoid being eaten themselves. That dance for survival is linked to moonlight, which has implications for fisheries management everywhere.
David Clode/Unsplash

Curious kids: how do gills work?

Rather than breathing in and out through the mouth, fish use a one-way system, passing water in one direction over their gills.
Shutterstock

It might be the world’s biggest ocean, but the mighty Pacific is in peril

The Pacific Ocean produces oxygen, helps regulates the weather, provides food and livelihoods. It’s a place of fun, solace and spiritual connection. But its delicate ecology is under threat.
Scarecrows float in an oilsands tailings pond to keep birds from landing, in Fort McMurray, Alta., in June 2017. THE CANADIAN PRESS/Jason Franson

New technology makes wastewater from the oilsands industry safer for fish

New regulations will allow oilsands companies to release 1.3 trillion litres of liquid waste into the Athabasca River in 2022. A new technology could clean the wastewater before it’s let go.
Hurricane Harvey set up a rare natural experiment to study the effects of fishing. NOAA via Wikipedia

When hurricanes temporarily halt fishing, marine food webs recover quickly

Hurricane Harvey destroyed the fishing infrastructure of Aransas Bay and reduced fishing by 80% over the following year. This removed humans from the trophic cascade and whole food webs changed.

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