The Sibsagar Joysagar Tank is a water tank located in the town of Sibsagar in the Indian state of Assam. The tank is one of the largest in Assam and is a popular tourist destination. The tank is surrounded by a number of temples, including the Joysagar Temple, the Rudra Mahalaya Temple, and the Dakhinpat Temple. The tank is also home to a number of fishes, which are popular with visitors.