The problem is when I drop algae wafers in the tank at night for my pleco, the other fish (mostly the 5 gold barbs and 2 blind cave fish) steal the food right out from the plecos mouth. my pleco chases them away, but they keep on. My pleco is 6" and the other fish are about 3-4". I have them in a 60 gal tank, so plenty of room. Any advice? Im frustrated for my pleco, and hope he is getting enough to eat!