How To Look For Comet Goldfish. The comet goldfish is best known for its appearance. Male goldfish have a thinner body and their vent looks like it is.
Comets have a slightly more compact body than the Common Goldfish and their signature feature is a long flowing tail. Because of their length they appear short and stiff. While most goldfish are either hearty single-tail types or the more delicate fancy double-tails the Comet is both a hearty and fancy breed.
The Comet Goldfish is an attractive little fish with a single fork-shaped tailfin unlike many of its cousins.
Comet goldfish have elongated flat bodies that taper gradually from the fishs back and belly to the base of the tail fin. It is also smaller than regular goldfish. Because of the unique tail they were named after a comet in space. They arent as large as others eitherbut they can get up to roughly 12 inches.