Koi,or more specifically nishikigoi,are colored varieties of carp that are kept for decorative purposes in outdoor koi ponds or water gardens.
The term carp is a generic common name for numerous species of freshwater fish from the family Cyprinidae,a very large clade of ray-finned fish mostly native to Eurasia. While carp are prized quarries and are valued as both food and ornamental fish in many parts of the Old World,they are considered trash fish and invasive pests in many parts of Africa,Australia and most of the United States.
Water garden or aquatic garden,is a term sometimes used for gardens,or parts of gardens,where any type of water feature is a principal or dominant element. The primary focus is on plants,but they will sometimes also house waterfowl,or ornamental fish,in which case it may be called a fish pond. They vary enormously in size and style.
An aquarist is a person who manages aquariums,either professionally or as a hobby. They typically care for aquatic animals,including fish and marine invertebrates. Some may care for aquatic mammals. Aquarists often work at public aquariums. They may also work at nature reserves,zoos,and amusement parks. Some aquarists conduct field research outdoors. In business,aquarists may work at pet stores,as commercial fish breeders,or as manufacturers. Some aquarists are hobbyists,also known as "home aquarists," who may vary in skills and experience.
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 goldfish.
The term coldwater fish can have different meanings in different contexts.
The Ranchū is a hooded variety of goldfish native to Japan,which lacks a dorsal fin. It is referred to as the "king of goldfish" by the Japanese. Maruko more commonly refers to the egg-fish goldfish.
The celestial eye goldfish or Choutengan is a double-tailed breed of fancy goldfish that possesses a distinctive pair of telescope eyes,in which the eyeballs are turned vertically and the pupils appear to be gazing skyward.
Fishkeeping is a popular hobby,practiced by aquarists,concerned with keeping fish in a home aquarium or garden pond. There is also a piscicultural fishkeeping industry,serving as a branch of agriculture.
Aquarium fish feed is plant or animal material intended for consumption by pet fish kept in aquariums or ponds. Fish foods normally contain macronutrients,trace elements and vitamins necessary to keep captive fish in good health. Approximately 80% of fishkeeping hobbyists feed their fish exclusively prepared foods that most commonly are produced in flake,pellet or tablet form. Some fish foods also contain additives such as sex hormones or beta carotene to artificially enhance the color of ornamental fish.
The common goldfish is a breed of goldfish and a family of Cyprinidae in the order cypriniformes. Goldfish are descendants of wild carp from East Asia. Most varieties of fancy goldfish were derived from this simple breed. Common goldfish come in a variety of colors including red,orange,red/white,white/black,yellow/white,blue,grey/brown,olive green,yellow,white,and black,with the most common variation being orange,hence the name. The brightness,duration,and vividness of the color may be an indication of the fish's health status,but not always,as water conditions and quality of care affect the fish's appearance.
The Pearlscale or Chinshurin (珍珠鱗) in Japanese is a spherical-bodied fancy goldfish with doubled finnage similar to the fantail.
Carassius is a genus in the ray-finned fish family Cyprinidae. Most species in this genus are commonly known as crucian carps,though that term often refers specifically to C. carassius. The most well known species is the goldfish. They have a Eurasian distribution,apparently originating further to the west than the typical carps.
A freshwater aquarium is a receptacle that holds one or more freshwater aquatic organisms for decorative,pet-keeping,or research purposes. Modern aquariums are most often made from transparent glass or acrylic glass. Typical inhabitants include fish,plants,amphibians,and invertebrates,such as snails and crustaceans.
The Prussian carp,silver Prussian carp or Gibel carp is a member of the family Cyprinidae,which includes many other fish,such as the common carp,goldfish,and the smaller minnows. It is a medium-sized cyprinid,and does not exceed a weight of 3 kilograms (6.6 lb) and a length of 45 centimetres (18 in). They are usually silver,although other color variations exist. They are omnivorous and feed on plankton,invertebrates,plant material and detritus. Originally from Siberia or central Europe,they have been introduced to and are now inhabiting lakes,ponds,and slow-moving rivers throughout Europe,North America,and Asia.
The Japanese white crucian carp,also known as Japanese carp,white crucian carp,or gengoro-buna,is a species of freshwater fish in the carp family. It is found in Japan and,as an introduced species,in several other countries in Asia. This fish is closely related to the commonly known goldfish.
The crucian carp is a medium-sized member of the common carp family Cyprinidae. It occurs widely in northern European regions. Its name derives from the Low German karusse or karutze,possibly from Medieval Latin coracinus.
The ginbuna,sometimes referred to as silver crucian carp or Japanese silver crucian carp,is a species of freshwater fish in the carp family. It is native to lakes and rivers in Japan.
The Kollar carp is a hybrid fish obtained by crossing common carp and goldfish. Described by the Austrian zoologist Johann Jacob Heckel,its binomial name pays tribute to his compatriot,entomologist Vincenz Kollar. Having been considered a separate species from its original relatives,this fish has as synonym Carpio kollarii. Although this carp is most often found in fish farms,they have also been recorded from the wild.
