Probably the king betta because it's the largest and in most cases the larger the fish, the smarter
BETTA Fish i think
Betta
It is a kind of tropical fish.
He Revealed He Is Half Betta Fish.
Crowntail, Veitail, and Halfmoons.
Water
Betta, goldfish.ex.
fake plants my fish loves them
It depends On its kind if turtle
a male Betta will usually like the company of other fish but will fight or kill others of their kind also they might fight guppies cause they look similar to a female Betta.
Depends on what kind of fish you have, betta fish can have up to 150 eggs and only 90% are born.
You can try to put Guppy fish in with your Betta fish. That would be one of the only fish that i would put in with my Betta fish. I say that because i have a Betta male and he is OKAY with guppies. the first guppy i put in his died to to getting picked on by him but the others did not, so just give him another chance if you decide to get guppies. Hope i helped!