I found a couple of my ghosts with their back legs rotting. The shrimp are not very active and didn't make an attempt to flee when I netted them out of the tank to separate them. I rather euthanize them now based on these conditions but I don't know how. I have euthanized many fish with clove oil. I am not comfortable crushing the shrimp as some suggest. I don't have any fish to feed them to (and wouldn't feed ill shrimp to fish anyway). I have clove oil on hand, and could freeze them if needed...the latter I am not all that thrilled with, but could do if needed.