Can fish go in an aquarium that had a box turtle in it?

Answer: Yes. The turtle, however, must have land to climb up on so as not to tire out, fresh fruits, vegetables, worms and crickets to eat on that land, and it must be handled so as not to make it antisocial.(Note: the turtle needs enough of a platform to get totally out of the water and crawl around. Not enough land may result in stress for your turtle.)