Tateshina Amusement Aquarium, Aquarium in Chino, Nagano Prefecture, Japan

Tateshina Amusement Aquarium is an aquarium on the Tateshina plateau in Chino, Nagano Prefecture, at an elevation of 1,750 m. Because Nagano is an inland prefecture, its tanks hold several thousand freshwater fish from around the world, among them the pirarucu of the Amazon and the nurse fish of West Asia. It is the highest-elevation aquarium in the world.

Tateshina Amusement Aquarium opened in 1993 at an elevation of 1,750 m on the Tateshina plateau. Its operator, Tateshina Kanko Kaihatsu, went bankrupt and the aquarium closed on 24 February 2010; the building and land were sold at auction. Aquashia Tateshina Co. reopened it on 14 July 2012, and in June 2014 management passed to Tateshina Aquarium Co.

The aquarium draws many families and school groups who combine a visit here with a day out in the Tateshina highlands. The setting gives the place a relaxed, outdoor-trip feel that is different from a city aquarium.

The aquarium is easiest to reach by car, and parking is available on site in the mountain area of Tateshina. Weekday visits tend to draw fewer people than weekends or school holidays, so the tanks are easier to see at a comfortable pace.

At 1,750 metres on the Tateshina plateau, it is the world's highest-elevation aquarium, holding thousands of freshwater fish from around the world, including Amazon piranha relatives such as the pirarucu and West Asian nurse fish. Pets are allowed inside, and a dog run has been attached since 27 April 2013.