Lake Poso (Indonesian: Danau Poso) is a lake in Central Sulawesi, Indonesia, and the third-deepest lake in Indonesia. The lake drains into the Poso River at Tentena, which flows into the Molucca Sea at the town of Poso. The lake contains various fish, including the eel Anguilla marmorata which migrates between the lake and the sea, and 11 fish species that are endemic to the lake. There is also a large number of endemic Tylomelania freshwater snails in the lake, as well as 11 endemic Caridina shrimps and Parathelphusid crabs. A park containing wild orchids is located near the village Bancea on the lake. As well the forests surrounding the lake still provide rare sightings of the anoa (dwarf buffalo) and the babirusa (literally, pigdeer), a ruminant pig