Live coral can become the centerpiece of a home aquarium, and can inspire the rest of the home décor with a lively aquatic theme. Many people who have reef aquariums never even put any fish in them because they are so lovely on their own, and the coral reef adds enough life and movement without a single fish begin around. A tropical fish coral reef aquarium is also beautiful, though, with a combination of the right fish and corals that makes the finished product all that much more special. Live coral by itself presents some different challenges compared to tropical fish, being that the focus of their aquarium is to sustain the health and beauty of invertebrates such as corals, anemones and others. A tropical fish coral reef tank will always be brilliant, whether there are fish or not, as the absolutely alluring underwater plant life within will often grab people's attention more than anything else. Reef aquariums come in smaller as well as larger sizes, but most people suggest at least a size of 35 gallons.
There are three specific kinds of reef aquariums and salt water tropical fish aquariums, including "fish only" tanks, which are is colorful and entrancing, and usually stocked with many colorful and unique-looking tropical fish. There are also those with nothing but live coral, and those that share a combination of both. The hardest to maintain is the last kind, because the different species often have problems interacting in such a closed environment, but many people are up to the challenge. Reef aquariums are essentially indoor aquatic garden, which have always been an amazing sight. People did not start really keeping a lot of live coral and tropical fish until the 1950s, when the advances in filtration systems stirred their popularity. Live coral is enough to keep a hobbyist and all their guests mystified, though, with or without the addition of fish.