As of right now, He's doing great. He is small, like 2.5", but at the moment he is swimming around hunting and being a normal Halichoeres wrasse haha. My melanurus is much larger, basically full grown at around 4.5" and he is the same way honestly. Constantly being inquisitive, hunting, and flying around the tank. I'm upgrading to a slightly larger tank soon to give them more room. If you just did the radiant in a breeder you should be fine