Came home from work and was feeding the tank and noticed the lawnmower blenny not going after the food. He hasn't moved since I came home. Put my hand in the tank and he still didn't budge. Breathing heavily with his mouth open. Just tested my water and everything seems fine. All the other fishes are doing fine. I did a water change last night. I don't have a hospital tank. I guess I have to wait and see what happens. This could be first fish to die on me.