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.
The common carp, also known as European carp or Eurasian carp, is a widespread freshwater fish of eutrophic waters in lakes and large rivers in Europe and Asia. The native wild populations are considered vulnerable to extinction by the International Union for Conservation of Nature (IUCN), but the species has also been domesticated and introduced into environments worldwide, and is often considered a destructive invasive species, being included in the list of the world's 100 worst invasive species. It gives its name to the carp family, Cyprinidae.
Asian carp is an informal grouping of several species of cyprinid freshwater fishes native to Eurasia, commonly referring to the four East Asian species silver carp, bighead carp, grass carp and black carp, which were introduced to North America during the 1970s and now regarded as invasive in the United States. These four species, now also known commercially as copi in the United States, are staple food fish in their native China, where they are collectively known as qing cao lian yong (青草鲢鳙) or si da jia yu and are farmed extensively.
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.
Coarse fishing is a phrase commonly used in Great Britain and Ireland. It refers to the angling for rough fish, which are fish species considered undesirable as food or game fish. Freshwater game fish are all salmonids, particularly salmon, trout and char. Generally, coarse fish are freshwater fish that are not salmonids, though there is often disagreement over whether grayling should be classified as a game fish or a coarse fish.
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. Goldfish released into the wild have become an invasive pest in parts of North America and Australia.
Carp is a common name for various species of freshwater fish from the family Cyprinidae that are native to Eurasia and sought after by some recreational fishermen. Certain carp species have been introduced, with mixed results, to various other locations around the world, and even declared invasive in certain regions.
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.
Bothriocephalus acheilognathi, also known as the Asian tapeworm, is a freshwater fish parasite that originated from China and Eastern Russia. It is a generalized parasite that affects a wide variety of fish hosts, particularly cyprinids, contributing to its overall success.
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.
Nigoro-buna, sometimes called round crucian carp, is a type of wild goldfish or related cyprinid endemic to Japan. Its habitat is limited to Lake Biwa, its tributaries and distributaries, and irrigation canals, in the Shiga Prefecture, northeast of Kyoto.
Goussia is a taxonomic genus, first described in 1896 by Labbé, containing parasitic protists which largely target fish and amphibians as their hosts. Members of this genus are homoxenous and often reside in the gastrointestinal tract of the host, however others may be found in organs such as the gallbladder or liver. The genera Goussia, as current phylogenies indicate, is part of the class Conoidasida, which is a subset of the parasitic phylum Apicomplexa; features of this phylum, such as a distinct apical complex containing specialized secretory organelles, an apical polar ring, and a conoid are all present within Goussia, and assist in the mechanical invasion of host tissue. The name Goussia is derived from the French word gousse, meaning pod. This name is based on the bi-valve sporocyst morphology which some Goussians display. Of the original 8 classified Goussians, 6 fit the “pod” morphology. As of this writing, the genera consists of 59 individual species.
Fish are exposed to large oxygen fluctuations in their aquatic environment since the inherent properties of water can result in marked spatial and temporal differences in the concentration of oxygen. Fish respond to hypoxia with varied behavioral, physiological, and cellular responses to maintain homeostasis and organism function in an oxygen-depleted environment. The biggest challenge fish face when exposed to low oxygen conditions is maintaining metabolic energy balance, as 95% of the oxygen consumed by fish is used for ATP production releasing the chemical energy of nutrients through the mitochondrial electron transport chain. Therefore, hypoxia survival requires a coordinated response to secure more oxygen from the depleted environment and counteract the metabolic consequences of decreased ATP production at the mitochondria.
This is an impartial and comprehensive record list of 308 British record freshwater fish, past and present, involving 60 different species/sub-species of fish caught using the traditional angling method of rod and line. Records to include the angler, species, weight, date, venue, also referenced with a recognizable publication. The list is intended to include all categories of fish caught by anglers, that enter freshwater including and some migratory sea fish. The time since last record fish was caught is 3 days.
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.
Palaeocarassius is an extinct genus of Miocene-aged cyprinid fish closely related to the crucian carps of Carassius. Most fossils are of otoliths, teeth, fin spines, and scales found in Miocene-aged lacustrine strata throughout Europe, though, two species, P. basalticus and P. priscus, are also known from whole body fossils, representing stout-bodied, large-headed animals that bear strong resemblances to the living crucian carps. The holotype of the type species, P. mydlovariensis, is a disarticulated head.
Cyvirus cyprinidallo2, also known as Cyprinid herpesvirus 2 (CyHV-2) is a species of virus in the genus Cyprinivirus, family Alloherpesviridae, and order Herpesvirales.
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.
