My realitve has a very bare tank and i wanted to know what she could put in her tank because its bare. She has a tank between 40-55g (we dont know the actual amount) it has know hood so no jumpy fish. The tanks stock is 1 Gold Gourami, red tailed shark, and some kind of pleco it was marked as a commoin, but its not that big. I think its a high fin pleco . any suggestions would help