Comet (goldfish) - Wikipedia

The comet goldfish can be distinguished from the common goldfish by its long, single and deeply forked tail fin. Comets with yellow, orange, red, white, and red-and-white coloration are common. The red coloration mainly appears on the tailfin and dorsal fin, but can also appear on the pelvic fin.

The Comet is more active than most other goldfish breeds. It is not unusual to see a Comet dashing...