My juvenile Festae seem to despise their tank lights. They hide when the lights are on and their colors disappear. They only come out for brief moments. When the lights are off they swim around and interact with each other. Only then can I see their colors and patterns. I was wondering if there was a particular light that they would prefer so that I could enjoy them without keeping the lights off. I hope this is something they will grow out of as they become older and larger.