Professor Ole Gunnar Dahlhaug and postdoctoral fellow Wolf Ludwig Kuhn at the Norwegian University of Science and Technology ...

Hundreds of Norwegian hydropower plants threaten fish and bottom-dwelling animals by exposing them to water that is ...

Gas bubble disease in fish occurs when water is supersaturated with dissolved gas, leading fish to absorb these gases and develop bubbles within their bodies. The excess gas absorbed by the fish forms ...

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SAN DIEGO (AP) – Seven people have been charged with smuggling bladders from an endangered fish in what authorities said Wednesday may be a growing international practice in which the bladders are ...

Since at least 1829, a big-eyed, silvery South American catfish with a peculiar skeleton has confounded scientists attempting to fit it into the tree of life. Now, a pair of researchers from the ...