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Hi everyone,
I am Ann, and I have 2 RES named Ai & Noa. I got them in October 2014, they were about 5cms small. And I would like to know roughly how old should they be. Ai is about 8cms long and Noa is about 10cms. Any help at all would be highly appreciated

Welcome to the forum! The sizes sound alright, keep an eye open for signs of over feeding - retained scutes, puffiness, thick seams. Your turtles were probably 6-12 months old when you got them.