Hi got my first fish on fri, a small clown. Put him in and he's been very active and healthy untill this morning where I came down early-6.30 am for work and he was on his side at the top of the tank. I panicked and touched his tail fin with my finger and he started to move but just slowly. I;ve had to come to work but my wife say's he's started to move a little more but still very slow. Also he is now hiding down the side of the filter where it is dark is this normal? thanks for your help!