I don't think there's really any way of determining what kind of mono those are without talking to the person who actually collected/breed them. They could be farmies from asia, peruvian, lake diamante, insert other south american lake/river name here, etc.
beautiful monos, that's all you're going to get from us as far as a positive ID
beautiful monos, that's all you're going to get from us as far as a positive ID