This genetic condition is more common in freshwater aquarium fish species, such as goldfish. Fish with polycystic kidney ...

Nearly a quarter of the world's freshwater species are at risk of extinction due to a multitude of threats, according to new research.

Freshwater fish populations that dwell nearer the poles ... Co-author Professor Martin Genner explained: "A common biological response to climatic warming in marine and terrestrial habitats ...

The freshwater species under threat of extinction include fish, crabs, crayfishes, shrimps, dragonflies and damselflies, ...