I'm new here, and I have a question.
Hello everyone, I'm new here, and I have a question which hopefully is not too complicated. I got my aquarium around January and it's been doing pretty good. Hopefully I can ask more questions as they come. Right now I have 7 fish (used to have 9, unfortunately 2 have died from swim bladder disease), 2 cleaner shrimp, and 3 coral. My question is regarding my yellow tang. I got him about a month ago, and he's pretty social, even though I've read that they are a shy species of fish. Today, however, he's been hiding behind the rocks in my tank in the exact same spot for the entire day, and only has come out to eat. Even when he came out to eat, he didn't eat much, and he seems to be swimming slightly slower than usual. I'm just wondering why he's been doing this, because he's typically the exact opposite of his recent actions.
Thanks for your help.