Tochigi Nakagawa Aquatic Park

栃木県なかがわ水遊園

Tochigi Nakagawa Aquatic Park is the official freshwater aquarium and park complex for experiencing fish of the Naka River and a large Amazon tank. The site calls it Tochigi Prefecture's only freshwater fish aquarium and also highlights local produce sales and traditional yana fishing experiences. Example opening hours shown on the homepage are 9:30-16:30 with last entry at 16:00.