Did my turtle eat my fish?

They do this through predation. Aquatic turtles have been known to eat almost any type of fish including goldfish, guppies, minnows, and more. If the fish is smaller than then turtle, chances are the turtle may go after it. There's not much you can do to stop this behavior, as it is natural for the turtle to eat fish.

Will a turtle eat a small fish?

Freshwater turtles are generally omnivores. In fact, they are generally more carnivorous feeding on snails, clams, crayfish, aquatic insects and small fish. As such, turtles may see the fish you place in the aquarium as prey. ... Some species of turtles such as snapping turtles are territorial.