I have guppies and bristle nose pleco in one tank. I'm worried because the plecos aren`t eating because when I put food in the tank the guppies start eating it. I`ve added algae wafers, vegetable tablets, cucumber and lots of vegetables. I always feed them at night and I`ve only had them for a week. Today one of my pleco died and the guppies were eating them, is that normal? I have no idea why the pleco died because there are no problems with the water and the other ones are still alive. It is my first time with plecos and I`ve already asked for help at the place where I got them.