I have to stick my nose in here. Do you feed her (looks like a girly from the fat figure!) other than the algae/left overs around the tank? A lot of pet shops will tell you thy only need what is left over, but they benefit from regular feedings... I feel horrible for all the poor pleco's who should be getting meals that are left to starve for algae. Too funny... You'd be surprised what personalities fish have... My koi girl is such a little diva, she will only let me touch her if there is some mango in it for her, but Caddy my Fancy goldfish is al for bak rubs all the time. Porky, my shubunkin with no hind end due to a cichlid attack, is a nut. He is a ball of fire. And they recognize people. My old angels knew who I was, they got downright ditzy when I walked in the room, didn't react to family. Ah, in case you weren't aware, that's a CAE, Chinese Algae eater. Got any algae wafers? mine loved them.. Homemade veggie jello snacks were a big hit too.
They tend to be skittish, but also can be aggressive in fish tanks and pick on other fish.
what kinda set up u got zoe?