What things should be put in an Aquarium with a Red Eared Turtle?

material items; they like a basking lamp with a dry dock to sunbathe maybe rocks but no pebbles because they might swallow them!

most fish will be eaten if you put them together but koi will be ok as long as it is about the same size as the turtle. ghost shrimp and other little aquatic organisms that are cheap to replace would also be nice but if you dont want them eaten then you would want one that your turtle will not be able to bit or fit in his/her mouth