Nakagawa Aquatic Park (栃木県なかがわ水遊園, Tochigi ken Nakagawa suiyu en) is an aquarium attached to the Tochigi Prefectural Fisheries Experiment Station, located on the banks of the Naka River in Sarado, Otawara, Tochigi Prefecture, Japan.

[5] The aquarium is accredited as a Museum-equivalent facilities by the Museum Act from Ministry of Education, Culture, Sports, Science and Technology.

[6] Located on the banks of the Naka River and the Broom River, two of the Kanto region's representative clear streams where sweetfish run upstream, it has an "Omoshiro sakana museum" that exhibits a variety of fish, a park, an observation deck, a fish encounter station, and other facilities.

[1] The aquarium displaying tropical fish from the Amazon River tank is the one of Japan's largest tank dedicated to freshwater fish.

[1] This article on a zoo, aquarium, safari park, dolphinarium, or aviary is a stub.