Hi Everyone! So I have this comet goldfish. His name is Flipper. I honestly don't have a clue on how old he is. I'm thinking around 10 years old. About a year ago he was still in his under-filtered, never cleaned, unlighted, horribly decorated 10 gallon tank. Since then he was moved to a 30 gallon, and now in his very own 55 gallon (along with some snails). He's been doing this thing where he will just lay down in a corner, and just kind of stay there for a long time. I don't really know how to explain it. Whenever I come up to the tank he does this "happy dance" and acts normal until I walk away and he just lays down again. There are times when he goes days without doing it but I don't know why. His tank cleaning routine is regular, the water quality is fine, what am I doing wrong? I have a picture but like I said he gets up when I get close to the tank so it's a pretty bad picture. I took it from half way across the room. I was thinking maybe he's just lonely but my dad is very much against this hobby of mine so I doubt he'd let me get another fish. Any help is appreciated. Thanks!