My Koi betta hangs out with the cories
I just ran into this message board.
I have 2 bettas, one blue vt and one koi.
The blue vt is more territorial and aggressive, he killed one of my snails and he wouldn't stop flaring at the next one.
He is alot happier alone.
Overall, i think the VT bettas are more territorial.
Then I have the koi betta, he is super social, lives with a snail in a 3 g and loves attention from us.
Recently, I just got a 20g long tank, i decided to put 2 corys with him.
He loves hanging out and socializing with them.
After, i added a 3rd and a 4th one, all different sizes.
Not once has he flared at any of them even though they are bumming and swimming around him.
It's quite a sight! =)