Tank Size: You will need at least 30-gallon, so nothing too big neither too small.
Care Level: They are easy, they are great beginner fish because they are very hardy in the aquarium environment. So, it is really good if you are looking for a fish that has got good color, especially if you are new to the hobby.
Temperament: It can be semi-aggressive which is not a lot to worry about because they are not aggressive towards other fishes. It is normally towards their own kind, so if you have just one in your tank, they will be calm and peaceful for the most part.
Reef Compatibility: YES! they do great in the reef, it is where they are from, it is just what they are used to in the wild. So, you will never find them messing with any of your corals, they will look very pretty swimming around the corals in your reef tank.