So I'm catching bait for tomorrow's catfishing adventure, and in my minnow trap I find three transparent creatures that look exactly like shrimp! In fact, they look like the "ghost shrimp" that you can buy as food for tropical fish. Has anyone ever heard of this? Are these an invasive species or something? Everyone I've talked to has never heard of this (I haven't mentioned it to the DNR yet). I wish i had my camera, though they looked exactly like this: http://collegeishard.tv/blog/ghost-shrimp.jpg and I thought maybe they were crayfish babies, but they didn't have pinchers, and were about 4cm long.