Sea Dragon: A marine fish in the family Syngnathidae, which also includes the seahorses. It is the only member of the genus Phycodurus. It is found along the southern and western coasts of Australia. While not large, they are slightly larger than most seahorses, growing to about 8-10in. They feed on plankton and small crustaceans. It can change color to blend in, but this ability depends on the seadragon's diet, age, location, and stress level.