The park is home to the 'Formosan masheer,' a fish species once nearly driven to extinction in this region due to overfishing.
Management of the park is conducted under the local Tsou tribal authority, which enforces strict prohibitions on fishing to protect the river population.
Tanaiku is a Tsou language term which translates roughly to 'the land where the masheer fish gather'.
The ecosystem restoration project here is often cited in Taiwan as a successful example of tribal-led community conservation.
The valley serves as an important site for traditional Tsou cultural rituals and storytelling.
Tanaiku Eco Park is a protected river valley nature reserve in Alishan Township, managed by the local Tsou Indigenous community. The park is defined by a central river canyon where visitors can observe schools of Formosan masheer fish in their natural habitat. A suspension bridge serves as the primary observation point over the riverbed. The area is a model for indigenous-led ecotourism, focusing on river ecosystem rehabilitation. The surrounding valley landscape features subtropical vegetation typical of the Alishan foothills. Accessible walking trails follow the riverbanks and are interspersed with local cultural displays.
The center of the suspension bridge for a panoramic view of the river valley and clear shots of the deep pools below.
Wear sturdy footwear with good grip, as the river valley trails can be slippery and uneven.
Check local weather reports for Alishan before departing, as mountain rain can cause sudden changes in river conditions.
Bring insect repellent to protect against mosquitoes and sand flies common in humid, forested valley environments.
Attempting to feed the fish or wading into restricted sections of the riverbed.
Strict no-fishing and no-feeding policies are enforced to protect the river wildlife. Please stay on marked paths to avoid disturbing indigenous habitat restoration areas.
