The Murray cod, named Arnie after Australia's recently retired Olympic champion Ariarne Titmus, was first tagged in 2022.

This spring offers a critical window to see if man-made "bungalows" installed in rivers can help a struggling fish species.

Scientists with a passion for spiny freshwater crayfish are undertaking the first ever study of the particular species in New South Wales. It is hoped their work will lead to better outcomes for the ...

Fish in market in Laos along the Mekong River. For millennia, fish have symbolized wealth and abundance. Thousands of years later, fish are still a critical component of diets for people around the ...

Underneath a tree, in the swampy waters of a pond at the bottom of a valley, New Zealand species recovery experts have found a small colony of rare eel-like creatures. Black mudfish were once the ...