i jsut put him in the tank a couple days ago, and he seems to latch onto the glass only in one spot in the whole tank (right under the filter) and he wont leave that square 3 inches of glass. Problem is, thats the one side of the tank that DOESENT have any algae growing on it for him to eat. ive put a couple wafers in there, practically on his face at one point and he wont eat them.. I was going to try zucchini, but whats the point if he wont eat anything? should i be concerned? or is he jsut getting adjusted to his new tank and will eat soon?