My RES hasn't even shown any interest in the fish around her. I did have 2 koi in the tank (yes, I was very stupid, at the time), but they are such gorgeous fish and I figured I would have the pond done before they got so big. Our turtle, Algernon (even tho a girl), would go and hang near the fish. After I found the koi a new home, she was sad and I think missed them. We have a pleco, but they are as exciting as a pet rock. I am hoping to add a rainbow shark to the mix sometime. My husband told me that I should advertise to grow fish, seems every one I have had in my tank has grown larger, quicker and has more personality. I can't get too attached to the fish, but my turtle is here to stay!!