It has been most omega 3 brine and some squid. Do you think it just food? He has been eating very well. His color loss was overnight? The only thing that change in the last few days was it was pretty hot out and the tank rose to 83-84 degrees???
Diet will have a great impact on fishes coloration. Try feeding Formula1 frozen food. It has many vitamins and beta-carotene. Over the years I have been able to improve (not just keep) most fishes coloration with it.
Lights have been on less than 2 hours and colour is back to normal. Thanks for all the info. I was starting to get concerned. One of my favorites and I have never seen him to early before (only had him for a few weeks). Did I mention that I love this site!!!!