According to the endangered species act, species whose population is reduced to near critical levels but is not on the brink of extinction is said to be

According to the endangered species act, species whose population is reduced to near critical levels but is not on the brink of extinction is said to be threatened species.
Threatened species  are vulnerable to be endangered species in the near future. They are facing problems in the environment and if steps are not taken to protect them, soon they will too become extinct.