I lost my first fish last night(sad) I had a Baby Blue Hippo Tang(1" maybe) I've had him since 5/23,he's been doing fine,swimming fine,looking healthy,eating good.Then all of a sudden his color started to get a little lighter(just a little) & he was kind of lethargic & last night my wife & I went to buy a new car & when we came home he was a gonner!All parameters were fine,the only thing I've done was added a protein skimmer a couple weeks ago,but that shouldn't have any bearing on anything should it? We had gotten kind of attached to the little guy.