Lol omg my fish don't do that either.
My silver dollars also are very greedy with the wafers! They always try to eat a whole one to themselves, they grab it and swim away as fast as they can.
My angel is probably the worst though, he is super aggressive at feeding time, especially with blood worms. He always snatches them out of everyones mouths lol its kinda funny but I feel bad for the others.
They all swarm around my hand and peck at it whenever its in the tank.
Your fish are super cute though, I wish mine would share