The ripsaw didn't get eaten because of the spikes on their sides.I keep mine 20 incher with a 7 inch giant gourami, 3 10-12 inch oscars, 2 5-7 inch nicaraguensis, 26 inch adonis, a ripsaw and a tsn x etc hybrid that all except the adonis and ripsaw could be eaten. The key is always keeping him well fed and in a large enough tank where everyone has room.