In keeping with my thread https://www.reef2reef.com/forums/reef-discussion/72911-favorite-least-favorite-corals.html, I thought I'd do one for fish. I'm torn for a favorite between the green mandarin and the marine betta. I might have to throw the scooter blenny in the mix too. I don't really have a least favorite, but it's probably some sort of grouper. I'll also state my perception at the beginning, that clowns and wrasses are the kings of the aquarium fish world. What are your favorites and least faves?