I love it when a fish is a "talker". Chance, Hector, and Fishy are/were talkers. This is what I call it when they wiggle up and down really really fast and pop their mouth open and shut really fast! I always like to think they're telling me what went on during the day or telling on something the other guys did!!! Silly, I know, but that makes me smile :)
And Zim's adorable way of attacking food! He tries to suck it up instead of just grabbing it and ends up chasing a pellet all over the tank for well over 30 seconds, while the other 2 take .00001 seconds to gobble theirs down!