I bought these fries without knowing what species they are, the only thing I know is that they are caught from a stream call "Rio Angusilla" in Peru. According to the importer, there are only Occels, Pleizona and Mono in that stream. They are currently all on pellets and I hope to see what they develop into. They came to me without the spangles and at 2 inches. Now they are close to 4inches, taking their time at growing...