I just got a mandarin as well and thought he had ich. I realized that it was just at night as well so I agree with Bang Guy. I purchased 100 live mysis shrimp online and am hoping they will reproduce and supply a consistent supply of food. I have a couple of pieces of fiji with enough cyst to support for a while but I have heard they will often deplete their cysts. Anybody tried live mysis breeding?
thanks,
Brad