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Lake Buhi is a lake found in Buhi, Camarines Sur, Philippines. It has an area of 18 square kilometres and has an average depth of 8 meters. The lake lies in the valley formed by two ancient volcanoes, Mt. Asog and Mt. Malinao. It was created in 1641, when an earthquake caused a side of Mt. Asog to collapse. The resulting landslide created a natural dam that blocked the flow of nearby streams.[1] Another theory suggests that it was created by the eruption of Mt. Asog, which is now dormant.

The lake is famous since it is one of the few bodies of water that contains the sinarapan (Mistichthys luzonensis) which is the world's smallest commercially harvested fish.[1]

Aside from the sinarapan, Lake Buhi is also home for other marine organisms such as the Irin-irin (Redigobius bikolanus), Dalag (Channa striata), Puyo (Anabas testudineus), Kotnag (Hemiramphus sp.), Burirawan (Strophidon sathete) and native catfish (Clarias sp.). Other fishes are introduced to boost the fishery industry such as the Nile tilapia (Oreochromis niloticus), Mozambique tilapia (Oreochromis mossambicus), common carp (Cyprinus carpio) and Bangkok hito (Clarias sp.).

The forest surrounding the lake is the home of at least 25 bird species. The five endemic species are the Philippine pygmy woodpecker, Philippine hanging parrot, black-naped monarch, elegant tit and the white-eared brown dove. Other fauna found in the forest are flying lizards (Draco sp.), skinks, monitor lizards (Varanus marmoratus), civets, bats and the Philippine Cynomolgus monkey (Macaca fasicularis).[2]

Today the lake is the main source of water supply for the National Power Corporation Hydro Electric Plant. The power plant, which was founded in 1952, generates an average of 2.8 megawatts. It is also used by the National Irrigation Administration to irrigate at least 100 square kilometres of the Riconada towns located downstream and Iriga City.

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