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Crayfish Saved: 180 Native Species Released in Yorkshire Dales
22 Apr
Summary
- Over 180 native white-clawed crayfish were released into Yorkshire Dales.
- A new hatchery at Flamingo Land significantly improves survival chances.
- Invasive signal crayfish threaten native populations with disease.
More than 180 native white-clawed crayfish have been reintroduced into the Yorkshire Dales as part of a crucial conservation initiative. This species, the UK's only native freshwater crayfish, faces severe threats from invasive American signal crayfish, which outcompete them and spread deadly diseases.
A dedicated crayfish hatchery was established at Flamingo Land in 2024, marking a significant step in boosting native populations. In 2025, the first pregnant females were introduced, leading to the birth of numerous young crayfish in June. These juveniles were then nurtured until they were large enough for release.
Conservationists aim to increase the survival rate of young crayfish, which has been as low as 5% in the wild due to habitat degradation and invasive species. The released crayfish in Haverdale Beck will be monitored, with plans to collect more pregnant females from other populations to further rebuild numbers.
