Popular aquarium fish include the Betta, a colorful freshwater fish native to Southeast Asia; the Guppy, a small, hardy fish that is easy to care for; the Tetra, a small, peaceful fish that comes in a variety of colors; the Goby, a bottom-dwelling fish that is often brightly colored; the WRASSE, a large, active fish that is found in tropical and subtropical waters; and the Molly, a peaceful, hardy fish that is popular among aquarists.