"blown. In this case the tail disintegrates in a zillion particles and usually can not be found at the bottom of the jar. One day your betta has a tail, the next, he has only a small piece left (. This is a very common problem now a day because bettas have been selectively bred for just about a hundred years now to have bigger and bigger finnage. Since the fins remain but a few cells thick, they can easily tear and fall apart if the betta becomes over active. "
http/www.bettatalk.com/answer119.htm
Originally I thought that my betta had tail rot a few weeks after I moved him into a larger tank and treated him for that but no medicine seemed to help (i keep his tank VERY clean, changing out water multiple times a week). Eventually his tail healed up on his own- it was just about full length when I come home two evenings ago and half of the tail it gone again! I fed him that morning and it was all there, when I came home it was gone-- no pieces of it on the bottom of his tank either. It's already healing up again but has anyone ever heard of a "blown" tail??
http/www.bettatalk.com/answer119.htm
Originally I thought that my betta had tail rot a few weeks after I moved him into a larger tank and treated him for that but no medicine seemed to help (i keep his tank VERY clean, changing out water multiple times a week). Eventually his tail healed up on his own- it was just about full length when I come home two evenings ago and half of the tail it gone again! I fed him that morning and it was all there, when I came home it was gone-- no pieces of it on the bottom of his tank either. It's already healing up again but has anyone ever heard of a "blown" tail??