I like all my fish actually...but there's something about my pleco. He's just a common pleco, but most of the plecos I've had generally don't show themselves much, hide all day, come out at night. Well this guy...he's out & active all the time, he surface-feeds, you should see him swimming upside down around the tank sucking on hikari pellets like they're Jolly Ranchers.
I also love my lil' convicts and my O, and my new Anostomus gracilis because he's different, and acts like no other fish I've kept.