Editing Cypriniformes (section)

==Relationship with humans==
The Cyprinidae in particular are important in a variety of ways. Many species are important food fish, particularly in Europe and Asia. Some are also important as aquarium fish, of which the [[goldfish]] and [[koi]] are perhaps the most celebrated. The other families are of less commercial importance. The Catostomidae have some importance in [[angling]], and some "loaches" are bred for the international [[aquarium]] fish trade.

Accidentally or deliberately introduced populations of [[common carp]] (''Cyprinus carpio'') and [[grass carp]] (''Ctenopharyngodon idella'') are found on all [[continent]]s except [[Antarctica]]. In some cases, these [[Invasive species|exotic species]] have a negative impact on the environment. Carp in particular stir up the riverbed, reducing the clarity of the water, making plant growth difficult.<ref>GSMFC (2005), FFWCC [2008]</ref>

In science, one of the most famous members of the Cypriniformes is the [[zebrafish]] (''Danio rerio''). The zebrafish is one of the most important vertebrate [[model organism]]s in biological and biochemical sciences, being used in many kinds of experiments. During early development, the zebrafish has a nearly transparent body, so it is ideal for studying developmental biology. It is also used for the elucidation of biochemical signaling pathways.<ref>{{cite web|url=http://www.zfin.org|title=Biochemical Signaling Pathways|publisher=ZFIN}}</ref> They are also good pets, but can be shy in bright light and crowded tanks.

===Threats and extinction===
[[File:Thicktail Chub.jpg|thumb|left|The [[thicktail chub]] (''Gila crassicauda'') is globally [[extinct]] since about 1960.]]
[[Habitat destruction]], [[damming]] of upland rivers, [[pollution]], and in some cases [[overfishing]] for food or the pet trade have driven some Cypriniformes to the brink of [[extinct]]ion or even beyond. In particular, Cyprinidae of southwestern [[North America]] have been severely affected; a considerable number went entirely extinct after settlement by Europeans. For example, in 1900 the [[thicktail chub]] (''Gila crassicauda'') was the most common freshwater fish found in [[California]]; 70 years later, not a single living individual existed.

[[File:Epalzeorhynchos bicolor.jpg|thumb|right|Few if any [[red-tailed black shark]]s (''Epalzeorhynchos bicolor'') remain in the wild today.]]
The well-known [[red-tailed black shark]] (''Epalzeorhynchos bicolor'') from the [[Mae Klong]] River of ''[[The Bridge on the River Kwai]]'' fame possibly only survives in captivity. Ironically, while pollution and other forms of overuse by humans have driven it from its native home, it is bred for the aquarium fish trade by the thousands. The [[Acanthobrama telavivensis|Yarqon bleak]] (''Acanthobrama telavivensis'') from the [[Yarqon River]] had to be rescued into captivity from imminent extinction; new populations have apparently<!-- IUCN says no in 2006, but paper was published shortly thereafter --> been established again successfully from captive stock. The Balitoridae and Cobitidae, meanwhile, contain a very large number of species about which essentially nothing is known except how they look and where they were first found.<ref name =iucn2007 />

Globally extinct Cypriniformes species are:<ref name =iucn2007>IUCN (2007)</ref>
* ''[[Acanthobrama hulensis]]''
* [[Alburnus akili|Gökçe balığı]], ''Alburnus akili''
* ''[[Barbus microbarbis]]''
* [[Snake River sucker]], ''Chasmistes muriei''
* ''[[Chondrostoma scodrense]]''
* ''[[Cyprinus yilongensis]]''
* [[Mexican dace]], ''Evarra bustamantei''
* [[Plateau chub]], ''Evarra eigenmanni''
* [[Endorheic chub]], ''Evarra tlahuacensis''
* [[Thicktail chub]], ''Gila crassicauda''
* [[Pahranagat spinedace]], ''Lepidomeda altivelis''
* [[Harelip sucker]], ''Moxostoma lacerum''
* [[Durango shiner]], ''Notropis aulidion''
* [[Phantom shiner]], ''Notropis orca''
* [[Salado shiner]], ''Notropis saladonis''
* [[Clear Lake splittail]], ''Pogonichthys ciscoides''
* [[Las Vegas dace]], ''Rhinichthys deaconi''
* [[Stumptooth minnow]], ''Stypodon signifer''
* ''[[Telestes ukliva]]''