Crayfish species
The crayfish alert list consists of 2 species from pet catalogues (i.e. Cherax destructor and Procambarus acutus) and 3 additional species not mentioned in catalogues but known to be invasive in neighbouring areas (i.e. Faxonius immunis, F. juvenilis, F. rusticus,). Of the alert list, only P. acutus is currently known to occur in Belgium with a limited number of populations. These species have a high to very high environmental risk score, with a moderate to high confidence level (see the alert list report).