I have reset a 29G high tank recently. Yesterday, I bought 10 neons. While tranferring them from the bag to the tank, my hand slipped and the bag collapsed around (I thought) 3 of the fish. I then realized that there was one still in the bag. I got it out and placed it in the tank. It has been acting very strangely since then. It seems partially paralized, unable to stay horizontal, often is upside-down and its body is bent slightly. The only way I know it is still alive, is that its fins are still moving. I don't know if I should euthanize it now or give it more time to possibly recover. I feel like crap that my stupidity is causing this creature so much pain. Any suggestions would be appreciated. By the way, all of the other fish are doing fine.