Co-exist happily or grudgingly

Can 5 cories get along with one (or possibly two) bristlenose plecos in 55 gallon aquarium? I figure they may be competing for some of the same food, but if I can get my bnp. to eat off clip.. the cories could help me keep bottom cleaner. I'm not sure if all plecos are messy like the three and a half inch guy I have now. I saw some brown plecos at walmart yesterday... they were less than an inch long. I thought my guy needs company- hmmm. Jim

Whereas the common brown would grow to two feet long, right? And while I am (foolishly) talking about walmart; may I ask about disease? I bought seven white mountain minnows from there three months ago. I made the guy netting fish avoid 2 or 3 minnows that at the time I thought were deformed. They had lips missing and deformed looking. Well, three days later, they were dying. I dosed them with erythromycin and only saved two. Know what they could have had? Thanks, Jim

Thank you very much, people... Sam doesn't have to be alone anymore.