u/puk1m0nster

So I recently bought a Take5 emperor kamfa around 2 inches. By the fourth day (first pic) he seemed to be beaming in colors already, and was swimming confidently so I tried to do mirror training. Shortly after putting the mirror in the tank, he started to hide behind the sponge filter and now his color is faded and he’s been hiding when I do water changes. He also has faint stress marks. What can I do to bring back his colors and increase his confidence? He still comes out to eat but hides after.