This tiny ancient fish only lives between two waterfalls in one river. It’s now under threat

Along a nine-mile stretch of river between two waterfalls in the Australian rainforest lives a tiny fish that’s been there for millions of years, hiding between rocks along the riverbank by day and ...

Rare freshwater Bloomfield River cod surviving amid environmental threats

The Bloomfield River cod, found in a far north Queensland river catchment, is the world's only tropical freshwater cod, and ...