The beauty of a river that differs from that of the ocean. The collaboration of the sun, greenery, and fish. -From Nakagawa River to world rivers, then to the longing sea-20,000 fish of 300 species are represented in the river aquarium.

It's just like being a fish.

Nature, from the source of Nakagawa River to downriver, is recreated. A large acrylic glass wall rises from the floor for a view of the half submerged water tank, with real trees and flowers in the ground section.
Sunlight coming through the leaves shine down, spreading in the water, swaying in the wind, and leaves and flower petals fall from the real trees gently sink in the riverbed, with lively fish swimming around... By gazing up to the sky from the bottom of the river, a space where you feel just like a fish has been created.

The dynamic fish of the Nakagawa River

The fish have been raised in the nature-themed water tank and swim around leisurely. Various phases can be seen according to the season, such as changing to bright courtship colors during the mating season, and demonstrating their dynamic egg laying activities. The fish grow in an aquarium which recreates nature, actively swimming, and showing off their bright mating colors during the egg laying period and dynamic breeding behaviors.
The display story is “From the Nakagawa River to world rivers, then to the longing sea.”Experience the beauty of the river that has been, up to now, too close to notice.

View the impressive large aquarium of the Amazon through the 360℃ panorama tubular tunnel.

Experience the Amazon River in the huge tank

The world’s largest river, the Amazon, is recreated in a 400 ton aquarium.The tunnel passes through the water tank, bringing the spectacular Amazon River right in front of you, as giant fish swim above your head and schools of fish hide under your feet.
Approximately 100 kinds of unique fish are swimming in the aquarium. Of course there are piranhas, but also catfish and rays, as well as small 2cm fish to the Pirarucu, the largest fish in the Amazon reaching sizes over 2m.
Light abundantly shimmers through the water, creating a dynamic water world as if it is a different spacial dimension. The “Amazon Large Water Tank” is the largest water tank in Japan to display fish from the Amazon River. Experience the magnificence of nature and the complexity of living creatures.

Various experience opportunities that are fun to not just watch, but join in! Craft Studio, Cooking Studio, Fish Laboratory

Enjoy making your own unique items!

At the Craft Studio, you can enjoy making your own unique works using Japanese paper, cocoons, and locally produced wood and bamboo while learning all about the traditional crafts that have been handed down over the generations in the area.

Enjoy the homemade taste!

At the Cooking Studio, you can have a cooking experience using local produce and enjoy the taste of homemade foods while deepening your understanding of local culture and agricultural products.

Experience living creatures firsthand!

At the Fish Laboratory, you can learn all about fish and rivers and the water cycle through observation and hands on learning with fish and other aquatic creatures.

Creative craft center

The craft center is located in the 2F Hands-on Zone of the FISHPAL. Enjoy making original crafts at the craft center, and learn about the traditional crafts passed down in the local area, using Japanese paper, silk cocoons, locally produced lumber, bamboo, etc. One-day lectures are held on Saturdays, Sundays, holidays, during summer vacation, etc. In addition, group lecture are available during times when the regular lectures are not scheduled. The lecture can be chosen from the experience menu. Times and the maximum number of people may change, please check with us.

Food craft center

The food craft center is located at the Hands-on Zone, 2F FISHPAL. Cooking classes using local agricultural products are held at the Center to deepen understanding of the local culture and agricultural products, as well as to enjoy the home-made taste. Enjoy the taste of home-made food such as “konnyaku” and “inaka manju” (country bun with sweet bean paste) which are specialties of the region. One-day lectures are held on Saturdays, Sundays, and holidays. Group lectures can be held at times when a regular lecture is not scheduled. The lecture can be chosen from the experience menu. Times and the maximum number of people may change, please check with us.

Fish laboratory

The fish laboratory is located on the 1F Hands-on Zone, FISHPAL. In this laboratory, you can learn about fish, rivers and the water environment through observation and experiments on fish and aquatic organisms. You can learn about fish anatomy through a hands-on experience and observation of fish scales, etc. One-day lectures are held on Saturdays, Sundays, and holidays. Group lectures can be held at times when a lecture is not scheduled. The lecture can be chosen from the experience menu. Times and the maximum number of people may change, please check with us.

Information room

The “Fun Fish Laboratory” is held on Saturday, Sunday, and holiday in the 2F information room of the FISHPAL, with a commentator. As continue towards the back of the room, a library with publications on fish and water, from children books to specialized books to satisfy a wide age group, has been arranged. In addition, information on the local area and surrounding sight-seeing information are also available, please feel free to check it out.

Amazon Cafe

Please stop by AMAZON CAFE when you visit Nakagawa Aquatic Park!
It is located on the second floor of the Funny Fish Observatory.
This cafe, which was designed with the image of the Amazon jungle, serves snacks and drinks that are associated with Amazon.
We especially recommend the seasonal sweets.Why not enjoy the taste of Amazon after you watch the Amazon fish in the big Amazon Tank!You can enjoy your meal without tickets.
Dining Capacity:33 seats
Operating Hours: 10:30 a.m. - 4:00 p.m.(Operating hours vary depending on the season.)
Last Order：3:45 p.m. (Time for last order vary depending on the season.)

Museum Shop Fishpal

The line-up of fish-themed goods is the very best in Tochigi!
The museum shop is located on the 2F of the FISHPAL. From original park goods and fish related products to various snacks, a wide range of products are available.
Exhibition related products according to the planned exhibition theme are especially recommended. Some fish-themed goods and related products are available for a limited time. Many cute items are reasonably priced so children visiting the park during a field trip can enjoy buying gifts themselves. If you are going to buy fish-themed goods in Tochigi, the Park is the place!
Moreover, an admission ticket is not needed to visit the museum shop. You are welcome to just visit the shop!

Nursing Room

The Nursing Room is located on the 2F of the FISHPAL, behind the kid’s room. The front room has diaper changing bed and sink.
Diapers are also sold at the museum shop.

Multipurpose restroom

Multipurpose restrooms are located on each floor. A diaper changing bed and baby care supplies are also available.
One multipurpose restroom is located on each floor of the FISHPAL.

Tochigi Nakagawa Aquatic Park(The only aquarium in Tochigi prefecture- From Nakagawa River to rivers of the world and then to the longing sea-)

2686 Sarado, Otawara-shi, Tochigi, 324-0404 TEL 0287-98-3055／FAX 0287-98-3115