''Gnathophis heterognathos'' is an

eel Eels are ray-finned fish belonging to the order Anguilliformes (), which consists of eight suborders, 20 families, 164 genera, and about 1000 species. Eels undergo considerable development from the early larval stage to the eventual adult stage ...

in the family

Congridae The Congridae are the family of conger and garden eels. Congers are valuable and often large food fishes, while garden eels live in colonies, all protruding from the sea floor after the manner of plants in a garden (thus the name). The family in ...

(conger/garden eels).''Gnathophis heterognathos''
at www.fishbase.org. It was described by

Pieter Bleeker Pieter Bleeker (10 July 1819 – 24 January 1878) was a Dutch medical doctor, Ichthyology, ichthyologist, and Herpetology, herpetologist. He was famous for the ''Atlas Ichthyologique des Indes Orientales Néêrlandaises'', his monumental work on ...

in 1858, originally under the genus ''

Myrophis ''Myrophis'' is a genus of eels in the snake eel family Ophichthidae. Species There are currently seven recognized species in this genus: * '' Myrophis anterodorsalis'' McCosker, E. B. Böhlke & J. E. Böhlke, 1989 (longfin worm eel) * '' My ...

''.Bleeker, P., 1858 ef. 16963''Vijfde bijdrage tot de kennis der ichthyologische fauna van Japan.'' Acta Societatis Regiae Scientiarum Indo-Neêrlandicae v. 5: 1-12, Pls. 1-3. It is a marine,

temperate In geography, the temperate climates of Earth occur in the middle latitudes (approximately 23.5° to 66.5° N/S of the Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ran ...

water-dwelling eel which is known from the western

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...

, including the southwestern

Japanese Archipelago The is an archipelago of list of islands of Japan, 14,125 islands that form the country of Japan. It extends over from the Sea of Okhotsk in the northeast to the East China Sea, East China and Philippine Sea, Philippine seas in the southwest al ...

, the

Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...

, and the

South China Sea The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by South China, in the west by the Indochinese Peninsula, in the east by the islands of Taiwan island, Taiwan and northwestern Philippines (mainly Luz ...

. It dwells at a depth range of 183–199 metres. Males can reach a maximum

total length Fish measurement is the measuring of individual fish and various parts of their anatomies, for data used in many areas of ichthyology, including taxonomy and fishery biology. Overall length Standard length (SL) is the length of a fish measured f ...

of .

References

heterognathos Fish described in 1858 {{Anguilliformes-stub