Rare Ice Age fish once thought to be extinct thriving in UK loch - This unique fish has only been known to exist at four ...

Animals that disappeared from some rivers because of pollution, dams and overharvesting are getting a new lease on life that ...

A rare fish which dates back to the Ice Age is continuing to thrive in a loch where it was introduced after becoming extinct ...

Divers in Taiwan film a giant oarfish, Regalecus glesne, in shallow waters. Encountering this mysterious creature is always a special treat.

The most expensive aquarium fish list for 2025, ranked. See the world's most expensive fish, worth over $400,000.

Four dozen tiny pupfish are swimming in a constructed habitat in a giant glass structure once meant to house humans.

Found only in the Ozarks, this one-of-a-kind fish is giving anglers a reason to cast their lines in the Illinois River. The Illinois River has long been a destination for fishing and floating, but for ...

The Libyan Marine Biology Association has confirmed the first recorded sighting of the Red Sea pennant fish (Heniochus ...

The Center for Biological Diversity is suing the Donald Trump administration over its refusal to address the declining marmot ...

At adulthood, the species can reach 12–14 metres and weigh more than 20 tonnes, making it the largest fish on Earth.

New data show a recent proliferation of rare earth mines across river basins in Laos, potentially posing a transboundary ...