When my fish do something stupid, and when they all pack to a side and watch me play battlefield bahaha, also my friend had one of my red tailed black sharks she hated a bong (tobacco) that got sat by her tank and would do a lap around the tank then come back (I assume) and scream I HATE YOU and shake, she despised anything green lol , I blame it on the tank decor being lime green and anything else green near it sent her over the edge, I tried a few other things and close to the same reaction, she also hated when my friend sat near the tank too which was frekkin awesome