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Glossogobius ankaranensis
''Glossogobius ankaranensis'' is a species of fish in the Gobiidae family. It is endemic to caves in the Ankarana Reserve in Madagascar. Its natural habitat is inland karsts.
==Cave system==
The Ankarana Mountain Range, formed by middle Jurassic sedimentary rock, is located in northern Madagascar, and its highest mountain is about 300 m above sea level.〔Jane M. Wilson (1996). Conservation and ecology of a new blind fish Glossogobius ankaranensis from the Ankárana Caves, Madagascar. Oryx, 30, pp 218–221. doi:10.1017/S0030605300021669.〕 Several trees grow in the mountains' canyons and downfallen caves. Evergreen trees especially have an advantage due to the waters from a system of rivers that flows through the underground caves.〔 Two important rivers enter the mountain range, the Andranotsisiloha and the Besaboba. These rivers are perennial and provide essential nutrients and habitat for an immense amount of organisms such as ''G. ankaranensis''.〔 This species was found in the Second River Cave. The only approachable section of the Second Cave River is 150 m long and the deepest point is 2 m with a width of 5 m. The water temperature benefits all organisms it houses because it oscillates around 21°C.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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