Sorry, missed the fish question.
I only feed Jaws fish, never tried her on anything else. She is a voracious feeder and goes through about 6 goldfish a week. Amazing method of hunting though, basically, she jumps in the water, mouth open and goes hell for leather hoping to scoop something up. Then, when she does, she rears her head out of the water and gulps it down. Quite funny to watch, not a shy feeder at all and extremely entertaining.
A very good display snake.