So my mom wants a 15 gallon aquarium. She likes fish that are large, colorful, and interactive. I showed her some German Blue Ram Cichlids. They are apparently small enough for a 15 gallon. They are intolerant to ammonia, so I didn't think they would be a very good starter fish. My local water pH is generally low to neutral(6.0-7.0). What fish should she get? Please, make sure they're easy fish to care for. She doesn't want them to be too much of a chore.