Sri Lankan Keelback/දියබරියා[Diya Bariya] (Xenochrophis asperrimus)
An endemic and common water snake of both dry and wet zone up to 1000m a.s.l. Found in rice fields, tanks, marshes, rivers and streams. It is active in water bodies both by day and during night in search of its prey which consist mainly of fish and frogs. It can be easily identified by having about 20 dark spots or bars of its first half of the body and two dark lines behind eye.