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Male Betta splendens or Siamese Fighting Fish, are intolerant of other male bettas. They are also intolerant of female betta's except when breeding. However, male Betta fish can live peacefully with any fish not large enough to be swallowed. They can be aggressive towards any other fish, but some male bettas are rather placid. It's a matter of finding a male betta that will tolerate all con-specifics.

Female betta fish are tolerant of any other fish, but will sometimes display aggressive behavior.

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14y ago

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