Well, he gave himself the biggest bruise I've ever seen on a fish. All over his head too. But no, no loud noises, no lights, no vibrations.. psycho? Possibly.
His eyes look healthy, just a darker shade on his head.
Oh and while he's in the subject, what causes a Betta to split it's fins?
Den-Ki started out with a tear shaped rip in his 'belly' fin, and now it's completely split almost all the way. There isn't any type of fungal-looking stuff on it, nor anything else. It just split. *shrugs*
But now I've moved him into my new 10 Gallon I just got done setting up. Conditioner too of course.