so i have read. when i was considering buying the emperor i looked it up online. i glanced at the headlines on google to see if it was hardy or not and i saw blurbs that is was, so i bought him. i checked again when i was looking up pictures and how long it would take the emperor to change colors and found out that it was hardy under moderate level care. i am still new, but i have kept two clowns and a shrimp for a year now and my 150 gallon has completed the nitrogen cycling process. i am pretty sure he will be okay though, he eats well and gets along with the other fish, i am just afraid of what he has on him, i have found that it wasnt brown spotches. i looked closer in the better main tank aquarium light, and found that they are white not brown. i bought him from house of tropicals, i know that thier tanks arent very big and the fish seem half dead, but i havnt lost one fish i bought there. i bought an angel from exotic aquatics which is suppose to be a better retailer and the fish died a week later.