The less messing around you do in a breeding tank the better. If absolutely necessary you could syphon a little water from the base of the tank to remove uneaten food or poo.
Yes a betta fish will grow back lost scales with time and clean water.
It depends if the fish has had it before it was removed most probably not.
ask-the-vet.com/breeding-betta-fish.htm its the best site i know of on breeding them. :D (hey, its somthing)
It's best to only put male and female betta fish in the same tank/bowl if you are breeding them. If they are not breeding and they still stay in the same area, the male would most likely attack the female, so keep the female away! Also, if you are breeding betta fish, make sure to remove the female betta after she lays her eggs, as the male will care for them and chase the female away.
maybe if you have a warm house. but if you plan on breeding Betta fish in under 70 degree water, let alone housing them, your betta fish will probably die.
That's perfectly normal for a betta.
no
I clean my male betta's 1gal bowl at least once a week
No, you should never keep a male and female betta fish together for long time periods. They should only be put in the same tank for breeding purposes and then separated after.
once i week
Betta fish are aggressive because they have evolved to be territorial in order to protect their territory and resources. This behavior is more pronounced in bettas compared to other fish species due to their natural instincts and breeding history.
up to 4 months