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

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

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 the Tigris–Euphrates Basin in the

Middle East The Middle East (term originally coined in English language) is a geopolitical region encompassing the Arabian Peninsula, the Levant, Turkey, Egypt, Iran, and Iraq. The term came into widespread usage by the United Kingdom and western Eur ...

. 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 cyprini ...

is the only member in its

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 ...

, 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 purpose of classifying organisms that do not fit anywhere else. They are typically defined by e ...

" ''

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 Ba ...

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

habitat loss Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease ...

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 stocks, fish stock), resu ...

. The binni is an elongate fish but is 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 tends to be skewed with more males than females. Maturity is reached when the species is 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 Aquatic ecosystem, ecosystems. The name comes from the Greek language, Greek words (), meaning 'plant', and (), mea ...

and

algae Algae ( , ; : alga ) is an informal term for any organisms of a large and diverse group of photosynthesis, photosynthetic organisms that are not plants, and includes species from multiple distinct clades. Such organisms range from unicellular ...

higher plant Vascular plants (), also called tracheophytes (, ) or collectively tracheophyta (; ), are plants that have lignified tissues (the xylem) for conducting water and minerals throughout the plant. They also have a specialized non-lignified tissue ( ...

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

Iraqi Arabic Mesopotamian Arabic (), also known as Iraqi Arabic or the Iraqi dialect (), or just as Iraqi (), is a group of varieties of Arabic spoken in the Mesopotamian basin of Iraq, as well as in Syria, southeastern Turkey, Iran, Kuwait and Iraqi diaspor ...

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

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

. Their fishermen traditionally employ an unusual technique of

spearfishing Spearfishing is fishing using handheld elongated, sharp-pointed tools such as a spear, gig, or harpoon, to impale the fish in the body. It was one of the earliest fishing techniques used by mankind, and has been deployed in artisanal fishi ...

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 Biennial plant, biennials, commonly called foxgloves. ''Digitalis'' is native to Europe, Western Asia, and northwestern Africa. The flowers are ...

'' or ''

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

''; 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.USAID
, iraqmarshes.org Umm al Binni Lake in

Maysan Governorate Maysan Governorate () is a governorate in southeastern Iraq, bordering Iran. Its administrative centre is the city of Amarah, and it is composed of six districts. Before 1976, it was named Amara Province. Etymology This region was called ''Messè ...

, Iraq, was named after this species. Now mostly dried-up following the draining of the Central Marshes, 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 depression (geology), depression in the surface of a solid astronomical body formed by the hypervelocity impact event, impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal c ...

mentioned in the

Epic of Gilgamesh The ''Epic of Gilgamesh'' () is an epic poetry, epic from ancient Mesopotamia. The literary history of Gilgamesh begins with five Sumerian language, Sumerian poems about Gilgamesh (formerly read as Sumerian "Bilgames"), king of Uruk, some of ...

References

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