Lake Yliki

Lake Yliki (Υλίκη Yliki, Ancient Greek: Ὑλίκη Hylike, Latinised as Hylica ) is a large natural lake of Boeotia, central Greece. Situated 8 km north of Thebes at 78 m elevation, it has been an important source of drinking water for the Athens agglomeration since 1958. It is surrounded by low mountains, which separate it from the drained Lake Copais.

Wildlife
The lake is home to several threatened endemic or near-endemic fish species: (IUCN Red List status shown)
 * Yliki barbel (Barbus carottae) formerly classified as skarouni (Luciobarbus graecus) Status iucn EN icon.svg
 * Greek stickleback or ellinopygósteos (Pungitius hellenicus) Status iucn CR icon.svg
 * marathon minnow (Pelasgus marathonicus) Status iucn NT icon.svg
 * Beotian riffle dace or paskóviza (Telestes beoticus) Status iucn EN icon.svg
 * Greek rudd or kalamithra (Scardinius graecus) Status iucn CR icon.svg
 * Yliki roach (Leucos ylikiensis) Status iucn EN icon.svg

In popular culture
Some scenes of French-singer Indila's music video "S.O.S" were filmed at the lake.