Marine fish, corals, and invertebrates evolved in natural seawater, where salinity and mineral composition support a complex marine ecosystem. In a closed aquarium, reef keepers recreate these conditions by mixing purified water with a carefully formulated marine salt or reef salt.
The tropic marine fish is very beautiful, and its radiant appearance attracts many aquarium enthusiasts to keep. Moreover, there are many kinds of marine fish, and the varieties are also varied. Newbies who are just getting started must be lost in these selections and don't know what to do. How should marine fish be chosen?