[ClauudiaDi]

I bought a white pearly coloured betta fish a few weeks ago and when I first got him only his pelvic fins were showing a bit of red but it was hardly noticable. He also had a little bit of black on his dorsal fin but again I didn't even notice until I brought him home. Lately he his fins have started to look like they have red stripes through them with dark patches appearing here and there. His body is still completely white though. The colour seems to be spreading over his fins but at a very slow rate. Could he have the marble gene? If so when will the colours start to come through more?

The attached image is a comparison shot of when I first got him and how he looks now