If they are super colored up at that size, they are definitely juiced. I’ve had juiced up males from Petco turn out to be females...
That female turned out to be holding fry, so yes, they can be fertile!
They will become less colorful, but will likely skill look decent.
The attached photos are the same fish. Juiced, and then 2 months later when it wore off.
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Honestly imo that female actually looks better after it was older rather then when it was still juiced. The colors seem to be a lil more defined and more natural looking.
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