Does someone kept this fish? "Biotodoma Cupido"

Such a nice color.
does anyone know how big do they grow?
what is the recommended tank size for this fish?
what are the common name?

Cupid Cichlid

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Cupid Cichlids get about 5-6" but are thick. I was surprised just how big their sibling species, B. wavrini, was when I saw wild caught adults. The Wet Spot gets in B. wavrini almost every year, so any of the local stores that order from them should be able to get you some.

The are fairly nitrate sensitive like many Geophagine cichlids. They also, like most Geo's, prefer to be in groups so given their adult size (though slow growers), I'd say a 75 gallon min but most likely a 125 gallon would be better.