''Phallostethus dunckeri'' is a species of

fish A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can ...

in the family

Phallostethidae Phallostethidae, also known as priapium fish, is a family of atheriniform fish native to freshwater and brackish habitats in southeast Asia. They are small, no more than in length, with partially translucent bodies. They are found in fresh and ...

. It is

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 ...

Malaysia Malaysia is a country in Southeast Asia. Featuring the Tanjung Piai, southernmost point of continental Eurasia, it is a federation, federal constitutional monarchy consisting of States and federal territories of Malaysia, 13 states and thre ...

Environment

''Phallostethus dunckeri'' is recorded to be found in a freshwater environment within a pelagic depth range. This species is native to a tropical climate.

Distribution

''Phallostethus dunckeri'' is native to the areas of Asia and Malaysia.

Biology

The eggs of ''Phallostethus dunckeri'' are fertilised internally and then after laying they are attached to the substrate by adhesive filaments.

Taxonomy and naming

''Phallostethus dunckeri'' is the

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

of the genus ''

Phallostethus ''Phallostethus'' is a small genus of fishes in the family Phallostethidae native to freshwater and brackish habitats in southeast Asia. Species The currently recognized species A species () is often defined as the largest group of organ ...

''. It was described by Charles Tate Regan in 1913 with a type locality of the

Muar River The Muar River () is a river which flows through the states of Negeri Sembilan and Johor in Malaysia. Its drainage basin encompasses the states aforementioned, as well as Pahang and Malacca. Measuring around 250 km (155 mi) in length, the Muar i ...

Johor Johor, also spelled Johore,'' is a States and federal territories of Malaysia, state of Malaysia in the south of the Malay Peninsula. It borders with Pahang, Malacca and Negeri Sembilan to the north. Johor has maritime borders with Singapore ...

in Malaysia. Regan honoured the

German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...

ichthyologist Ichthyology is the branch of zoology devoted to the study of fish, including bony fish (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). According to FishBase, 35,800 species of fish had been described as of March 2 ...

Georg Duncker Paul Georg Egmont Duncker (6 May 1870, Hamburg – 28 July 1953, Ahrensburg) was a German ichthyologist. Biography He studied at the universities of Kiel, Freiburg, and Berlin, receiving his doctorate at Kiel in 1895. Following graduation ...

(1870–1953) of the Zoologisches Museum Hamburg, Duncker initially wrote about this species in 1904 but he was too busy to write a description so he passed some of his specimens on to Regan for him to describe.

Environment

Distribution

Biology

Taxonomy and naming

References

Further reading