My Clownfish have been showing some very strange behavior lately. I have had them for about 2 years and have never see them do this before. Anyway, the bigger of the two (which I think is the female) is hiding is a crevice in my LR all day, and only comes out for feeding time. The other clown is out swimming around like normal. At first I thought maybe one of them was dying, but she does come out at night and sticks close to the smaller one (the male?) Anybody have any explanation for this behavior? Thank you.