My gf has a tank that has just finished cycling. So far there is one turbo snail, 4 crabs. One brittle starfish and a three striped damsel( we did not cycle with the fish. we used raw shrimp) any way just the other day the damsel was kinda picking on one of the crabs. Well after doing a water change I could not find the damsel. About ten min later he comes out with a large chunk missing out of his head. Literally there is a piece missing out of his body. Well we placed. Breeder tank In her tank to net him off from the rest of the tank. Well today when we were at work a crab got into the breeder tank and took one of the damsels eyes..
what should I do with him? He is still alive but I can tell he is not doing well.