What are some other animals I can "safely" put in with carnivorous turtles?

Maybe some sort of crayfish or crabs?

Really big goldfish! Our turtle “kept” one of the feeder fish we gave her as a friend and now it is as big as the turtle! lol!

I tried putting in a large gold fish and the turtles started taking shots at it. The turtles are also used to ganging up on crustaceans and making a meal out of them. In my experience if it’s not a turtle and they can catch it, they will destroy it. I even tried an extra large crayfish named Slim Jim and they went to war until I put him back in the river.

I kept a large goldfish in a backyard stock tank with a red-eared slider. They seemed to get along OK.

It is important to note that the goldfish did eventually disappear. However, I suspect it was due to a colder than normal winder rather than the turtle having himself a feast.

Plastic fish.

@YoBob How would a cold winter cause a fish to vanish? I can’t imagine a gold fish large enough to discourage a foot long Slider.

@ChazMaz Err… Well, I already have plastic plants and that WOULD decrease the bioload of the setup… Guess I’ll get to work on an android fish.

@timyobobewen
I think @benchazmazdrew is saying that the goldfish migrated to warmer places.

@rebbel He said he kept them in a tank.

@benstormsimew Well, he was about 5–6 inches long and lasted for about 3 years. It is true, however, that I never saw the body…

The only thing that could defend against a carnivorous turtle is a carnivorous fish….Pirhana!