all of my tangs and other fish are fed thera+A pellets 3 times a day then every other day(yes i cut back on my frozen foods) a mixture of emerald entrese.formula 1 and formula 2 , reef formula.mixture of meaty foods .. they have always had good coloring but after about a week of feeding the thera+A pellets their coloring became much brighter and bolder..it is the most nutrient enriched prepared food i have found as of yet.also has added garlic to help reduce parisitic attacks