Weight: up to 90g
Average Lifespan: 8-12 years
When to seeJanuary to December
AboutAs the UK's only native freshwater crayfish, the White-clawed crayfish is in decline due to the introduction of the non-native North American signal crayfish. This invasive species has brought disease to which our indigenous crayfish has no natural resistance. An omnivorous crustacean, the White-clawed crayfish eats invertebrates, carrion, water plants and dead organic matter. It inhabits small freshwater streams of a depth less than 1 metre, hiding underneath stones and rocks and in small crevices where they forage for food.
How to identifyThe White-clawed crayfish is small and bronze-coloured, with pale cream or rose undersides on its claws.
In our area
White-clawed Crayfish are now very rare and are only known from one river catchment in Montgomeryshire; the River Banwy and her tributaries. This population is clinging on in the face of imminent threats from Signal Crayfish and Crayfish Plague, so they need your help - Check, Clean, Dry