Calais,

The locals in my area swear that nutria eat fish. The books say they do not. One time I had them, I also observed fish skeletons on the bank.

Your comment about using BG in the trap for them begs the question. Have you seen evidence they are eating fish? I believe they do, but can't prove it with first hand observation. If they do, then it makes the case against them even stronger. Thanks.