My RES have just started taking pellets in the last couple weeks. I had to go to them though. They would not come to the usual feeding areas. I found 2 areas where they were located. At first, they were pretty hesitant, but now they come readily to feed. Their feeding habits are also quite different from the HBG, which attack the food w/fury. The RES casually slurp it from the surface. They also swim in an undulating, porpoise fashion, taking one pellet after another until full.