The Marbled Crayfish - (Procambarus virginalis) 

 We are hoping we have now eliminated this invasive asexual crayfish from Ontario: (https://bsky.app/profile/drecrevisse.bsky.social/post/3mwsrhytbnk2e). 

Sadly however there are now two other known populations in Canada: in Okanagan BC and Yarmouth NS.