Recently, I've been considering getting a turtle. I researched a bit and found a breed of turtle that fits all of my preferences. My boyfriend wants to get a large tank to put fish in (150 gallons) and was wondering if I could also fit in a Cumberland Slider as well without it killing the fish. I have read that they do eat fish, but do they usually eat them if given another food source? If they do then could you possibly suggest a small-medium breed that is an active semi-aquatic and isn't particularly aggressive? Sorry if that's too specific but I'm a bit picky, haha.