The best replacement for male betta is female.

The best alternatives to male betta are rated as following:
★★★★★  female
★  female betta

Your alternative for male betta is not listed? Suggest!
Speaking about male betta, one probably shouldn't forget about dwarf gourami.

Other search terms related to male betta and their ratings are:
★★★★★ dwarf gourami
★★★★★ female betta
★★★ female guppies
★★ neon tetras
You have in mind a companion for male betta and it is not yet here? Propose!



Google Trends

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male betta
female
female betta