I just got 4 ghost shrimp yesterday and now I can only find one. I found one dead, but I can't find the other two. One is still kicking. I have 2 swordtails, 1 male betta, 3 neon tetras, 1 albino cory, and 1 golden snail. Would any of them see them shrimp as food? I was hoping for a decent clean up crew.