So as an update. I have had success feeding two different way. One is to feed the tetras on one side of my tank with slow sinking food and feed Ram on the other side of the tank with faster sinking food. The second method, which works the best, if to feed blood warms with a turkey Baster. That is the only food the ram really eats out of the water instead of off the ground. A little squeeze in front of him and he chows down!