I was just looking at the species index to try and identify my hillstream when I spotted this comparison picture.
My hillstream has the dorsal markings of G. Ctenocephalus (bottom image), yet has the caudal markings of G.Scitulus. Could mine be a different strain of Gastromyzon, or is she just confused?
I'll try and get a photo of her once I work out how my new camera works (early birthday present ^_^).