2 -3 months old Red-eared sliders can live up to 20 years in captivity, which means they're a serious commitment. If you get one of these quarter-sized babies, it may look easy at first, but as they grow, they will need a giant tank and a lot of constant care. It's more than just a bowl with a little bit of water and a rock. Aquatic turtles, including red eared sliders, will need special lighting, animal- and plant-based foods, and continuous cleaning and maintenance.