I have one 10" syn and one 4" syn/fh hybrid and they are both scared as hell of eating floating food.. The big syn will slowly creep up to the top grab a pellet, then spaz out and jerk back down to the bottom, then repeat. The smaller hybrid does these lunges where half of his body shoots up out of the tank and half the time he totally misses the pellet.. Does anybody notice this with their vieja?