Dem pesky 'American Crawfish'...... have invaded the Netherlands.....I'll help eradicate them.

 

https://www.dutchnews.nl/news/2020/09/local-councils-call-for-help-in-eradicating-the-destructive-american-crayfish/

I have the solution.  Am still looking for them in the roadsides ditches, creeks and ponds around Heelweg.