Keeping the white on red & white fish "clean"

[WakinAZ]

Do you all have any suggestions for keeping the white portions of red & white fish nice and white? I have a wakin that has started to develop yellowish-orange splotches on his white parts. I'm thinking it might be diet, and it's the only factor I can reasonably control anyway: genetics are set and my fish are indoors for now. I do feed freeze-dried krill a couple times a week to enhance reds/oranges and provide roughage and variety - bad idea?

[Cincy Ranchu]

Tough deal here, are the fish inside or outside? If outside, you might have no recourse, if inside go to a staple fish food like Ken's, Omega One-Goldfish:yess:, or Deli Flake from Brine Shrimp Direct

[WakinAZ]

Thank you for replying, Gary. The fish are inside. Which of the various Ken's formulations would you recommend? My current staple food is Hikari. Do you think I should stop feeding the krill as supplement?