You're not suppose to, but i have a penny-sized painted turtle in with 2 huge red eared sliders. The pet store says they should be comparible in size. but go ahead
Well you have to have a UV Light, a Turtle Dock, a Filter, a Heater, and at the least a 10 gallon tank. You need 1 gallon per inch of turtle. I have two baby painted turtles and they eat "Baby Shrimp...
Baby painted turtles are mainly carnivorous at such young ages, so a commercial food product such as Wardleys or ReptoMin is normally suggested. Remember that turtles can develop problems if fed too...