The glass blue-eye (''Kiunga ballochi'') is a species of

fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of li ...

in the

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoologi ...

Pseudomugilinae The Pseudomugilidae, the blue-eyes, are a subfamily of atheriniform fish in the rainbowfish family Melanotaeniidae. They inhabit fresh and brackish water in Australia, New Guinea and nearby smaller islands. Blue-eyes are small fish, typically n ...

. It is

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 elsew ...

Papua New Guinea Papua New Guinea (abbreviated PNG; , ; tpi, Papua Niugini; ho, Papua Niu Gini), officially the Independent State of Papua New Guinea ( tpi, Independen Stet bilong Papua Niugini; ho, Independen Stet bilong Papua Niu Gini), is a country i ...

where it is only known to occur in a few small creeks adjacent to a stretch of the Ok Tedi Mine supply road between the settlements of Kiunga and

Tabubil Tabubil is a town located in the Star Mountains area of the North Fly District of Western Province, Papua New Guinea. The town, including the adjoining relocated village of Wangabin and the industrial area of Laydown (where industrial equipment wa ...

in the Upper Fly River system close to the frontier with

Irian Jaya New Guinea (; Hiri Motu: ''Niu Gini''; id, Papua, or , historically ) is the world's second-largest island with an area of . Located in Oceania in the southwestern Pacific Ocean, the island is separated from Australia by the wide Torres ...

. This species has a mainly transparent body with silvery gill covers and belly, there are black spots on the margins of the scales and there are black markings on the fins and

lateral line The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial ...

, with the fins being shaded with yellow, with the exception of the transparent

pectoral fins Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as se ...

. It attains a

standard length Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish m ...

of . This species was described by Gerald R. Allen in 1983 and its specific name honours the site biologist at the Ok Tedi Mine, David Balloch, for the support and assistance he gave Allen.

References

Kiunga (fish) Freshwater fish of Papua New Guinea Taxonomy articles created by Polbot Fish described in 1983 Endemic fauna of Papua New Guinea {{Atheriniformes-stub