Yeah he seems to be doing well and he is very active. You can see him at anytime due to his color and the fact that he doesn't seem to be bothered by the lights as much compared to the other star. He doesn't like direct light but he will hang out on under a ledge in full view. H also ventures all over the tank where as the other one stays in the same area at all times. I would love to have a yellow one but don't know if they exist.