Originally Posted by Trent2591
Ive seperated them all for the time being, they are all in seperate tanks, usually they are all housed in a 27 Gallon tank, its a community tank with 1 male & 3 females, i took my male beta to the vet and he has confirmed that it is fin rot and CAN be caused by a new betta fish being added to the tank that is already infected. The vet also stated that if it was due to fighting the male usually doesn't have damage to his fins as he is at the top of the "pecking order". His given me some antibiotics for them and need to change water every 3 days and add more of the antibiotics.
Wow, I know that if my female got in with my male, she would tear him to shreds, she's WAY more aggressive than he is.
Also, I had a friend who used to breed Bettas and ended up quitting because the female kept killing the male and then eating it.
So, the male is not always the top of the pecking order.