The quagga mussel (Dreissena rostriformis bugensis) is an invasive freshwater bivalve that has recently established populations in the UK. Native to the Ponto-Caspian region, it was first recorded in the UK in 2014. Known for its ability to rapidly colonize water systems, the quagga mussel can outcompete native species, clog water infrastructure, and alter nutrient dynamics in aquatic ecosystems. Its spread poses significant ecological and economic challenges.
