I have 7 in a 180gal with danios and ottos and shrimp, and an unfortunate amount of snails. The platinum blue one seems to be the only male. I think he fancies the koi but I'm hoping he will choose one of the veils to breed with.
They have so much personality! The black one likes to be on her own foraging, the baby (not pictured) usually follows one of the big females around only to be chased away by the male. And that gold veil swims like she is queen of the tank. Like the other fish were created so she can stand out among them. The male and koi are usually hanging out picking at the glass.
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