The binni (''Mesopotamichthys sharpeyi'') is a

species In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...

cyprinid Cyprinidae is a family of freshwater fish commonly called the carp or minnow family. It includes the carps, the true minnows, and relatives like the barbs and barbels. Cyprinidae is the largest and most diverse fish family and the largest ve ...

fish

endemic Endemism is the state of a species being found 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 found els ...

to the Tigris–Euphrates Basin in the

Middle East The Middle East ( ar, الشرق الأوسط, ISO 233: ) is a geopolitical region commonly encompassing Arabia (including the Arabian Peninsula and Bahrain), Asia Minor (Asian part of Turkey except Hatay Province), East Thrace (Europ ...

. This fish mostly inhabits lakes and marshes, especially in densely vegetated places where it also lays its eggs, but periodically it moves into rivers. This

barbel Barbel may refer to: *Barbel (anatomy), a whisker-like organ near the mouth found in some fish (notably catfish, loaches and cyprinids) and turtles *Barbel (fish), a common name for certain species of fish **''Barbus barbus'', a species of cyprinid ...

is the only member in its

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

, but was included in the "

wastebasket genus Wastebasket taxon (also called a wastebin taxon, dustbin taxon or catch-all taxon) is a term used by some taxonomists to refer to a taxon that has the sole purpose of classifying organisms that do not fit anywhere else. They are typically defined ...

" ''

Barbus ''Barbus'' is a genus of ray-finned fish in the family Cyprinidae. The type species of ''Barbus'' is the common barbel, first described as ''Cyprinus barbus'' and now named ''Barbus barbus''. ''Barbus'' is the namesake genus of the subfamily B ...

'' by earlier authors. It has declined in recent times due to

habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ...

and

overfishing Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing fish stock), resulting in the ...

. The binni is an elongate fish but deep-bodied for a barbel. It is overall brownish–golden with a lighter belly and darker fins. It can reach up to in total length, and in weight. The sexes are similar, but females reach a larger size. The sex ratio tend to be skewed with more males than females. Maturity is reaches when two to four years old, and the species can reach an age of up to nine years. It feeds almost entirely on plants, ranging from

phytoplankton Phytoplankton () are the autotrophic (self-feeding) components of the plankton community and a key part of ocean and freshwater ecosystems. The name comes from the Greek words (), meaning 'plant', and (), meaning 'wanderer' or 'drifter'. P ...

and

algae Algae ( , ; : alga ) are any of a large and diverse group of photosynthetic, eukaryotic organisms. The name is an informal term for a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from ...

higher plant Vascular plants (), also called tracheophytes () or collectively Tracheophyta (), form a large group of land plants ( accepted known species) that have lignified tissues (the xylem) for conducting water and minerals throughout the plant. They al ...

s. Although remains of tiny animals have been found in their stomach, these are probably ingested by mistake when feeding on plants. Known in the local

Iraqi Arabic Mesopotamian Arabic, ( ar, لهجة بلاد ما بين النهرين) also known as Iraqi Arabic ( ar, اللهجة العراقية), or Gilit Mesopotamian Arabic (as opposed to Qeltu Mesopotamian Arabic) is a continuum of mutually intelligi ...

dialect as ''binni'' or ''bunni'', this fish is valued highly by the

Marsh Arabs The Marsh Arabs ( ar, عرب الأهوار ''ʻArab al-Ahwār'' "Arabs of the Marshlands"), also referred to as the Maʻdān ( ar, معدان "dweller in the plains") or Shroog (Iraqi ar, شروق, "those from the east")—the latter two often ...

. Their fishermen traditionally employ an unusual technique of

spearfishing Spearfishing is a method of fishing that involves impaling the fish with a straight pointed object such as a spear, gig or harpoon. It has been deployed in artisanal fishing throughout the world for millennia. Early civilisations were famil ...

from a line of boats or poison-fishing with flour or dung laced with toxic ''

Digitalis ''Digitalis'' ( or ) is a genus of about 20 species of herbaceous perennial plants, shrubs, and biennials, commonly called foxgloves. ''Digitalis'' is native to Europe, western Asia, and northwestern Africa. The flowers are tubular in sh ...

'' or ''

Datura ''Datura'' is a genus of nine species of highly poisonous, vespertine-flowering plants belonging to the nightshade family Solanaceae. They are commonly known as thornapples or jimsonweeds, but are also known as devil's trumpets (not to be con ...

''; until recently net-fishing was mostly restricted to the Berbera tribe and held in low esteem. Since the 1960s however, large-scale fisheries have also been developed; once of prime importance throughout Iraq, the marshland fish stocks presumably declined notably following the

draining of the Mesopotamian Marshes The Mesopotamian Marshes were drained in Iraq and to a smaller degree in Iran between the 1950s and 1990s to clear large areas of the marshes in the Tigris-Euphrates river system. Formerly covering an area of around , the main sub-marshes, the ...

.USAID
, iraqmarshes.org Umm al Binni lake in

Maysan Governorate , image_map = Maysan in Iraq.svg , mapsize = 200px , settlement_type = Governorate , subdivision_type = Country , subdivision_name = , subdivision_t ...

, Iraq, was named after this species. Now mostly dried-up following the draining of the

Central Marshes The Central or Qurna Marshes are a large complex of wetlands in Iraq that, along with the Hawizeh Marshes (Iraq/Iran), Hawizeh and Hammar Marshes, Hammar marshes, make up the Mesopotamian Marshes of the Tigris–Euphrates river system. Formerly co ...

, its name attests to the former abundance of this fish and possible use as spawning ground (''Umm'' is Arabic for "mother", but does not necessarily imply procreation). The lake is of interest as a possible

impact crater An impact crater is a circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact crater ...

mentioned in the

Epic of Gilgamesh The ''Epic of Gilgamesh'' () is an epic poem from ancient Mesopotamia, and is regarded as the earliest surviving notable literature and the second oldest religious text, after the Pyramid Texts. The literary history of Gilgamesh begins wit ...

References

{{Taxonbar, from=Q6408596 Barbinae Cyprinid fish of Asia Fish of Iran Fish described in 1874 Taxa named by Albert Günther