''Garra widdowsoni'', commonly known as the Iraq blind barb or Haditha cave garra, is a species of

cyprinid Cyprinidae is a Family (biology), family of freshwater fish commonly called the carp or minnow family, including the carps, the true minnows, and their relatives the barb (fish), barbs and barbel (fish), barbels, among others. Cyprinidae is the ...

fish

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to underground water systems near

Haditha Haditha (, ''al-Ḥadīthah'') is a town in the Al Anbar Governorate, about northwest of Baghdad. It is a farming town situated on the Euphrates River. Its population of around 46,500 people, predominantly Sunni Muslim Arabs. The town lies near ...

Iraq Iraq, officially the Republic of Iraq, is a country in West Asia. It is bordered by Saudi Arabia to Iraq–Saudi Arabia border, the south, Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq border, the east, the Persian Gulf and ...

. Although traditionally placed in its own

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

''Typhlogarra'', this is not supported by genetic evidence, leading to its move to genus ''

Garra ''Garra'' is a genus of fish in the family (biology), family Cyprinidae. These fish are one example of the "log suckers", Suckermouth, sucker-mouthed Barb (fish), barbs and other cyprinids commonly kept in Aquarium, aquaria to keep down algae. T ...

''. This

cavefish Cavefish or cave fish is a generic term for fresh and brackish water fish adapted to life in caves and other underground habitats. Related terms are subterranean fish, Troglomorphism, troglomorphic fish, troglobitic fish, stygobitic fish, phreat ...

is considered

critically endangered An IUCN Red List critically endangered (CR or sometimes CE) species is one that has been categorized by the International Union for Conservation of Nature as facing an extremely high risk of extinction in the wild. As of December 2023, of t ...

because of water extraction, which has lowered the

groundwater level The water table is the upper surface of the phreatic zone or zone of saturation. The zone of saturation is where the pores and fractures of the ground are saturated with groundwater, which may be fresh, saline, or brackish, depending on the loc ...

. Once abundant, a survey in 2012 found that it now was very rare. Another species from the same place, ''

Caecocypris basimi ''Caecocypris basimi'', the Haditha cavefish, is a species of cyprinid fish endemic to Iraq, only occurring in aquifers near Haditha. It is found in an underground sinkhole directly under a shrine the only way to access which is a well 5m below ...

'', may already be

extinct Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...

. The only other known cavefish in Iraq is ''

Eidinemacheilus proudlovei ''Eidinemacheilus'' is a genus of troglobitic fish in the family Nemacheilidae endemic to Iran and Iraqi Kurdistan Iraqi Kurdistan or Southern Kurdistan () refers to the Kurds, Kurdish-populated part of northern Iraq. It is considered one ...

''.Freyhof, J.; Abdullah, Y.S.; Ararat, K.; Ibrahim, H.; & Geiger, M.F. (2016): Eidinemacheilus proudlovei, a new subterranean loach from Iraqi Kurdistan (Teleostei; Nemacheilidae). ''Zootaxa, 4173 (3): 225-236.''

References

Cave fish Cyprinid fish of Asia Fish described in 1955 Labeoninae Taxonomy articles created by Polbot {{Labeoninae-stub