Originally Posted by Mako
Well I read a lot of different sources that all stated that guppies and tetras are some of the worst pairings with bettas because bettas mistake guppies as their own species because of the fins and tetras are fin nippers. I was thinking of trying to put in a female betta with my male betta. I think my betta is quite calm and I haven't tried to give it a tank mate yet.
Most peaceful tetra species do OK with a calmer betta, and generally if kept in a large enough school in a big enough tank they won't nip at a betta most of the time.
While a couple(that I have heard of)of very experienced breeders have kept males and female captive-bred Betta Spendens together, they are in large heavily planted tanks and the bettas are siblings bred and raised by the breeder.
In any other circumstance, males and females of your common store-bought betta spendens species should never ever be kept together in the same undivided(theres even some controversy on divided)tank as permanent tank mates. Thats just a bloodbath waiting to happen, one of them will end up killing the other. They aren't called 'Fighting Fish' for nothing.