pretty sure i already know the answer to this question, but i'm inexperienced with shrimp and want to be sure i'm not misinterpreting this behavior.... i picked up two RCS from my LFS, drove home, and then was checking them out in their bag. one was swimming around, one was just lying on its back. i was like, whaaa?! when suddenly the dead-looking one sprang up, swam around, and then floated down looking dead again, just lying on its side. i transferred them to a tall glass...it was swimming around, came up to the surface, swam, bumped into a bubble *boof* and went face-first plummeting to the bottom. (sinking, not swimming.) i left that one in a small-ish jar over night. it's still acting pretty much the same. i dropped in some baby shrimp food and it didn't do anything. every once in a while i can see it moving its legs, but really no walking around. so, is he about ready to meet his maker? or do shrimp act wonky like this when they're perfectly fine?