yes as truck says f0 is wild specemin then f1 being 1st generation ie fry of 2 wild male /female then f2 2nd generation being spawn of the f1 and so on
Mark if your fish is a F0 specimen then I have 2 of them in my tank. Both are only between 3-3.5" maximum and are both as colourful and striking as yours... I doubt I would have got 2 wild specimens from a LFS at completely different visits as I am sure breeders will want to keep the F0s.