The Nymph Goldfish is a specialty line, bred to include the rounded body of a Fantail and the straight tail of a Comet.
Goldfish are available in a wide, seemingly limitless, range of colours. The most frequently seen is Red, which can be varying shades of orange red, orange and orange yellow. Calico and Shubunkin colouring refers to a mottled pattern of blue, red, orange, brown, yellow or black. Black goldfish are available, but they can tend to fade indoors.
A good staple food for goldfish is a high quality floating granule. The small size is best, as this assures all fish get their fair share. Feeding floating granules, two to three times a day, in the right quantities is one of the major factors in keeping goldfish healthy and active. For variety, occasionally substitute flake food, and, more importantly, some vegetable material.