Koi or more specifically nishikigoi, are colored varieties of the Amur carp that are kept for decorative purposes in outdoor koi ponds or water gardens.
Shubunkins are a hardy, single-tailed goldfish with nacreous scales and a pattern known as calico. The Shubunkins are of Japanese origin.
Calico goldfish are goldfish of any breed that have a type of scale that is intermediate between the metallic type of scales and the transparent type. These scales have a slight sheen that produces a pearly appearance. The name "calico goldfish" came about because the first fish that were introduced with this type of scales had a mottled calico pattern with several colours.
The comet or comet-tailed goldfish is a single-tailed goldfish bred in the United States. It is similar to the common goldfish, except slightly smaller and slimmer, and is mainly distinguished by its long deeply forked tail. Comet goldfish tend to have a diverse variety of colors, unlike the common house pet goldfish.
The telescope eye is a fancy goldfish characterised by its protruding eyes. It was first developed in the early 1700s in China, where the trait was referred to as dragon eyes.
The ryukin is a short deep-bodied fancy goldfish with a characteristic hump in the shoulder region.
An oranda is a breed of goldfish characterized by a prominent bubble-like "hood" on the head. The headgrowth or hood may be a prominent growth on the top of the head or may encase the entire face except for the eyes and mouth.
The Fantail is a goldfish that possesses an egg-shaped body, a high dorsal fin, a long quadruple caudal fin, and no shoulder hump. It is similar to the Ryukin, and is relatively common in western countries.
The lionhead is a hooded variety of fancy goldfish. This fish is the precursor to the ranchu.
The Ranchu is a hooded variety of fancy goldfish developed in Japan. It is referred to as the "king of goldfish" by the Japanese. This breed has also been historically referred to as the Maruko or Corean Goldfish. However, today, Maruko more commonly refers to the egg-fish goldfish.
The veiltail is a type of goldfish known for its extra-long, flowing double tail and high sail-like dorsal fin.
Celestial eye goldfish or Choutengan is a double-tailed breed of fancy goldfish that has a breed-defining pair of telescope eyes which are turned upwards, pupils gazing skyward. When the fry hatch, the eyes of young Celestials are normal but gradually protrude sideways, as in the Telescope eye goldfish, but unlike the telescope, which has eyes facing outwards on each side, the eyes of the celestial eye turns strictly upwards within a period of six months of development. This process is entirely governed by genetics, though early sources perpetuated the myth that the fish were bred and kept in narrow-necked clay jars and the eyes turned upwards seeking the limited source of light.
The Pearlscale is a spherical-bodied fancy goldfish with doubled finnage similar to the fantail.
The Tosakin (土佐金) or curly fantail goldfish is a distinctive breed of goldfish with a large tail fin that spreads out horizontally behind the fish. Though technically a divided tail, the two halves are attached at the center/middle forming a single fin.
The Meteor goldfish is a tailless breed of fancy goldfish thought to have been developed by goldfish breeders during the late 19th or early 20th century. The meteor goldfish lacked a tail fin, but had a well-developed anal fin in the tail fin's position. The other fins of the meteor goldfish were elongated, and it was a competent swimmer despite its lack of a tail.
The egg fish goldfish is a fancy goldfish breed which lacks a dorsal fin and has a pronounced egg-shaped body. They look ike ranchu but without the swollen heads of ranchu, and a longer body.
The Curled-gill or Reversed-gill goldfish is another uncommon variety of fancy goldfish that has been developed by specialist enthusiasts. It owes its name from the out-turned appearance of its gill covers. This fish resembles a Ryukin. For the appearance of this goldfish, it has a fantail-shaped body with long finnage all round as well as a deeply forked tail; the color is typically metallic orange.
The goldfish is a freshwater fish in the family Cyprinidae of order Cypriniformes. It is commonly kept as a pet in indoor aquariums, and is one of the most popular aquarium fish.
The jikin goldfish is a breed of wakin-like goldfish from Japan, also known as the peacock tail goldfish.
