no surprise that your ornate ate those sharks. I would be surprised if the ornate didn't eat them on the first night! In comparison, my 5 inch weeksi ate all eight of my 3.5 inch clown loaches with no problem. The bichir was only 3/4 bigger!
My jag is smaller but it still bully's the larger poly? He stays up by the top by the filter most of the time. Going to have set up a section in big tank one of them. There still far to small for the big boys.