The invasive introduced rusty crayfish are no good in Quetico’s Basswood Lake, displacing native species. Read the Quetico Foundation’s 2014 biology intern, Hannah Gehrels’ blog: https://whenilookatthestars.wordpress.com/2015/03/18/rusty-the-ravenous/

crayfish_rusty_and_virile_Noah_Cole copy

 

Photo compilation (rusty crayfish and virile crayfish): Noah Cole