Feeding time
Your fish make my fish look like snobs. My fish will certainly get excited when it's feeding time (twice a day) but most of them are picky about what they chose to eat from my semi-DIY reef blend (mix of pods, PE mysis, mini-mysis, brine shrimp, 3-4 different dry foods, garlic extract and selcon all mixed up and frozen into mini-cubes). The only one that reacts even close to that is my cardinal fish. The others just kinda pick and choose. I wish they'd attack the food like that though considering how much work I put into mixing it up, freezing it and feeding them twice a day. The picky, spoiled little bastards.
EDIT: at least my little herd of nassarius snails appreciate my work and dedication.