The Pac Blue Hippo Tang is also known as Yellow Tail Blue Tang, Regal Blue Tang and Pacific Blue Tang. It is a bright blue fish with black on it's sides and a bright yellow tail. This is "Dory" from the movie Finding Nemo. The Pacific Blue is normally a peaceful fish but will be aggressive and fight with others of it's species if there is only one other one in the tank. However multiples of 3++ can be successfully housed together, provided the tank is large enough and takes into consideration the fishes size once fully mature. It is a reef safe fish that can be housed with corals and small invertebrates like sexy shrimp.