Once you have done all the hard work of setting-up your saltwater reef aquarium and have patiently waited until you tank has been cycled sufficiently i.e. when your tank water tested negative for ammonia, nitrite and nitrate, the fun parts of adding fishes and corals begins. However, before buying the fishes and invertebrates, it is important that you consider their needs, maximum adult size, temperament and requirements first as having the wrong mix of fishes and invertebrates together in the same saltwater reef aquarium will cause lots of problems later. This is because some of them will fight with each others or become prey or predator for the others especially when they are kept in the small space of the aquarium. Visit this site for more information and guide about saltwater fishes temperament, care and information and if they are compatible with each other.