my adonis is very active at about 5". If its been a few weeks since the last time I fed him any high protein foods, he will come to the surface, and swim upside down and eat plankton and krill (Freeze dried) right off the top. Keep a good high protein diet, these guys do not do well with out some for of high protein, the krill is a good source, I us blood worms, and brine shrimp for mine, both frozen. other than that looks pretty good.