Hi, I had 2 clownfish (nemo) but a week or so ago one disappeared. The remaining one seems skittish, scarred to eat, staying on top, etc. I think it is getting somewhat bullied by my male anthias (I have a pair) and by the dwarf angel. I also have a wrasse and a mandarin (7 total) in my 90 gallon reef tank. What do you all think? Is it necessary to have 2? If so, should I get another tank bred and what size? Mine is about 10 months old and isnt full grown. I got the pair when they were the size of a nickel. Thanks for any help