Thanks everyone! I do think my betta associates me with food. But he fixates on my fingers when I feed him, to the point that he often fails to notice the food when I drop it in. I think he thinks my fingers are food too. This made me wonder what his perception of me is. He could be thinking either "There's the nice food-bringing creature," or "Here comes that big hunk of food bending over my tank again--I wish I could catch more of it than those little bits that fall off" 