I have a 10 gallon tank that houses a male Paradise betta and a small school of neon tetras. I am just learning how to care for a community aquarium. When I feed the fish the Betta eats just fine but the neon tetras don't seem to be actually getting any food. Is it possible that they are grabbing the food that falls from the surface? I am worried that they are not actually getting any food. What can I look for to make sure they are? and if they are not what can I do to make sure they get food?