I don't think it's L397. The orangish stripes are too narrow, and the face doesn't have the scribbling. I would guess clown pleco, L104 or L162. That was my guess last night, but I've done some looking since then, and I think I'm going to stick with that guess, especially since it looks almost exactly like the one here http://www.aquaticcommunity.com/pleco/clown.php