Idk i thought i seen someone on here with two bettas in a tank to together VT and CT. I think its like a rare case if they go get along, But i wouldnt try it to risky, so i would say no to putting them together also
Perhaps if the tank was large enough. I'm thinking 100 gallons + with heavy plant cover. I believe males will establish dominance over a certain part of the tank and not venture out of that area. So it's possible that it could work in such a large tank.
I know that they CAN be kept together in a larger tank, with heavy plant coverage. These people just think it's OKAY to keep so many males in a smaller tank (25gal) that isn't full of plants. I guess it COULD work out but it's almost guaranteeing, in my eyes, that it won't. I'm not going to give them the time of day because they can just learn.. >.< It's something I feel strong about though/:
Oldfishlady has Done it successfully but only after many generations of breeding aggressiveness out.
Bettas in the wild have a 3x3' territory so I imagine if the tank was longer than 6' and wider than ' it could possibly work.
But by no means would I ever recommend it.
I agree with MSG, let them do it and kill their bettas, sounds cruel, but it also sounds like this person needs to learn the hard way.
It's sad to see that they won't listen, but they seem to think they know everything about this and it's OKAY etc etc. Also they said wild Betta are more aggressive... I don't think I agree with that either.
I spent an hour trying to explain to them the dangers etc of having that many male Betta together in such a small, empty tank. But they won't listen to me, or anyone else, so I guess they are going to have to learn on their own. Hopefully then they get that it's not very wise..
Oh well. It's not my life or my fish but I do try to make them see that it is a bit dangerous for the fish =\