Just watch how they interact and if the betta is being aggressive isolate him. Bettas can be with other fish as long as the betta is a different color and there arent any fish with similar fins.
None are recommended if the Betta is a male.
Any.
it depends i have a male with a female betta, in a 2.5 gallon tank,they get along, i wouldnt risk it, no
you can put a betta in a 54 gallon tank
The male will kill the female after he spawns her. If she won't spawn he will still kill her. No male Betta will allow another Betta (male or female) to live in its vicinity. So the answer is NO.
you can put a betta in a 5 gallon tank
well... i think i have gotten my male to except two other females by putting them in a bigger tank. ( i have 5 gal. tank) or i think i had gotten the male to except a female by putting them in a smaller devider tank (half gallon) if your asking about breeding them... i havent found out how to do that either. heh heh
no
i have 10 gallon tank with a male beta, a male angelfish, a red finned shark, and a rope eel and they all seem to like it very well.
Just one male betta, but you should consider a proper betta set up which can have 2 to 2.5 gallons for the one fish.
You should not put your Betta fish in the same tank in the first place, most likely the male will kill your other fish. by res do you mean red eared slider?
put it in a tank with another male betta