It is similar to the common goldfish, except slightly smaller and slimmer, and is mainly distinguished by its long deeply forked tail.

Comets with yellow, orange, red, white, and red-and-white coloration are common.

Due to the comet's hardy and active nature, and the relative ease in caring for them, they are the breed best suited to ponds and outdoor pools.

Comets have a natural life span of 5 to 14 years and may live even longer in optimal conditions.

[2] Due to the relatively inexpensive prices of comet goldfish, they may also be used as prizes in carnivals or other places of entertainment.