I'd say it is an albino bristle nose pleco
They will eat algae wafers, veggies, such as zuchinni, and wood.......therefore you should have some driftwood in the tank
From the size (2"), and lack of whiskers, I'd guess you have a female.....by that size, the males usually have "bristles" on the nose. Females either lack the bristles or have noticeably less than the males.