The Nong Khai Aquarium, also known as the Sirindhorn Aquarium, serves as the largest aquatic learning center in Northeastern Thailand. Located within the Khon Kaen University, Nong Khai Campus, it was graciously named by Her Royal Highness Princess Maha Chakri Sirindhorn. The facility is meticulously designed to showcase the vast biodiversity of the Mekong River basin. Inside, visitors can explore over 30 tanks, with the primary highlight being the 34-meter-long underwater tunnel. This tunnel provides a breathtaking experience, simulating a stroll beneath the Mekong River and the open sea, allowing for a 360-degree observation of aquatic life in a near-natural environment.

The exhibitions are categorized into freshwater, brackish water, and marine sections, with a significant emphasis on the giants of the Mekong, such as the "Mekong Giant Catfish"—the world's largest scaleless freshwater fish. Other showcased species include Black Ear Catfish, Siamese Giant Carp, and various exotic ornamental fish. Beyond being a tourist attraction, the aquarium plays a vital role in research and the conservation of endangered species, aiming to preserve aquatic resources for future generations. It stands as a premier destination that harmoniously blends natural science education with a high-quality recreational experience for all visitors.

• Located on the edge of Nong Yati Reservoir, approximately 5-7 kilometers from Nakhon Phanom city center, it is easily accessible by private car or motorized tricycle (Skylab) from the city.

• Plan your visit to catch the daily diver fish feeding show at 1:45 PM.

• Extra feeding shows are available at 10:00 AM on weekends and public holidays.

• Schools or large groups should submit a coordination letter in advance for special discounts.

• Flash photography is strictly prohibited to prevent harming the fishes' eyesight.

• The facility is fully air-conditioned, providing a comfortable escape from the outdoor heat.

• Don't miss the "Turtle Zone" near the exit, a popular highlight for young children.

• Free admission is granted to monks, people with disabilities, and children under 90 cm.

Admission Fees:

• Thai Nationals: Adults 50 THB / Students and Children 30 THB

• Foreigners: Adults 100 THB / Children 50 THB

• Free Entry: Monks, people with disabilities, seniors (60+ years old), and children under 90 cm in height_.

Opening Hours:

• Tuesday – Sunday: 9:00 AM – 5:00 PM

• Monday: Closed (except on public holidays)

• (Note: The ticket booth may close 30 minutes before the official closing time.)