I'm having troubles with my plecos. I had a common pleco, it lasted about a week. I bought it Last Monday. I tried feeding in lettece and algae pucks but I couldn't seem to get him to the bottome of the tank. It staied at the top of the tank and finally died today. I was very upset because I didn't know what to do. I have a community 55 gallon tank with 5 South African Cichlids in it. I bought a rubber lipped pleco today but it seem sto want to stay on the side of the tank and not on the bottom where there is a lot of algae for it to eat. What should I do? I don't want my poor fish to die.