About 4,900 river turtles of yellow spots, also known as the rail, were released into the Rijeka Igapó-Açu, in Brazil.
Threatening species live in river pools in North South America, and the Federal University of Amazonas has been implemented by projects aimed at strengthening the number of turtles for a decade.
At that time, more than 70,000 turtles are free to live in the wild.
