I have a tank just for my cories alone, the neighbor next door offered me a free juvineile clown loach since he is moving out in about a week and selling the tank. I have heard clowns over time act as they are apart of the species. He says he has had just that one and sometimes it sleeps around or on top of his peppered cories. Can this be done as a alternative to 6 clowns'? Also what do clowns eat, he says he feeds his herbivore tablets by tetra but the little guy like to go up and down the sides of the tank nibbling on white algae and stuff?