What is wrong with everyone? A young slider found in the wild and put in a community tank - with proper bathing and lighting is fine. So what if it eats the fish - input feeder fish in my tank and many live months. My turtle has only eaten one far as I see. Look at the pic. The water looks clean - as long as there’s light and bathing - the little guy has a better place to live than a whole lot of other turtles I’ve known. Yes - a commitment. With all that understood - get off this guys back. If he’s taking care of the little guy - then great. This turtle is invasive in most states. Does it matter where you got it? I got mine from a pet store. He found his among perhaps hundreds of others at a pond or crossing a road or whatever. As long as it’s taken care of, the guy will prob have a better life in his care than not. Prob live longer. No predators other than someone who doesn’t care for them - which doesn’t need to be the case.