So I gave Cinder his first water change today. He scared me for a few moments because once I was done, he was huddling by the heater!! I was so scared I had somehow killed him on accident-- but a moment later, after tapping the tank, he was perfectly fine! He was sleeping, apparently. :P
So he's recognizing me a little more as I spend each day near him. He came over to investigate my fingers as I wiggled them in front of the tank. :) What a cutie!
Also, he's obsessed with his heater and every corner of his tank. He keeps fighting with his reflection!