I had a betta named Blaze who used to watch my mom eat dinner. LOL. It freaked her out so much. She would put a towel over his tiny tank while she was eating.
I had a tiny pleco named Marli that would stick to my fingers and clean them, and she'd follow me around the tank if I put my finger on the glass.
My little fiddler crabs, Jaq and Joq, used to wave their claws at me if I got too close, or if I was doing something with the tank. It always cracked me up!
My current betta, Juno, hides in his microswords and then darts out if I lean over and look into his tank, like he's trying to scare me away.