i went to the lfs and got some feeder shrimp for my turtle tank for pets. lol im a softy. but i wanted them to clean the left over blood worms that he cant get to. so i got a serving and a week or 2 later theres only like 2-3 left. he doesnt eat them because he can barely c them. and hes not fast enough. they live in amounst heaps of rocks so. how long can they live for and what conditions do i need to keep them?