Tesselatta's and Green Moray's both get much larger than Hawaiin Dragons. The aggression in all varies, and all three are piscivorious, feeding on fish. This means they will all have a very impressive set of teeth. The Hawaiin dragon might be the most unusually colored, but they are all gorgeous. All three should be kept in a species only tank, the green moray and tesselatta should have at least a 200g tank. Bo