Had 2 squid appear in my spawn trap last night, and must have washed in from my water channels, not happened before you posted anything obsi, I think you have created a monster!
I started building a smallscale squidfarm under my storage room for them, and they just disappeared lol. D'oh! Oh and my squidarium now has a big fat zero number of squids. It is hereby now declared the local swimming pool.