75 could house a male for awhile but larger tank would be much appreciated later. The one in the avatar is around 13-14".
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+1. A 75 is a decent grow out for a single male. I WOULD NOT try to breed them or keep a pair. The pair I posted above lived for a month together but once she was ready to breed game over. He killed her. Even with hiding places it's just not enough room for them to live comfortable.
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