Does anyone know of a small pleco that won't get grouchy...? My plecos from tanks past have always gotten grouchy, and now I have a 29 gallon with a bristlenose pleco who is only 2.5 inches long but is already getting grouchy. He polices the other fish at feeding time. I can throw three pieces of algae tab in the tank, and he only has to share with 3 otos, but he will run back and forth between the three pieces butting the other fish away, trying to keep all the food for himself. Are there any plecos with better table manners...?