I recently got a new betta from petco. he looks healthy to me but he isn’t very active and he typically just swims at the top. he explores the rest of his tank but when he does he moves pretty slow. he’s eating normally and he’s in a 5 gallon. heated to 78 degrees with plants and a large rock. he also sometimes swims with his head down and his tail almost up, as if he’s letting himself drift in place (NOT float away though). I didn’t know if this was normal new betta behavior or if maybe he just has a chilled out personality or if something is wrong. I have had bettas before but I don’t remember how they acted when I first brought them home. thanks!