i have a 10 gallon for tetras mixed guppies, the problem is my guppies have no problem going up to get food and stuff to eat, but my tetras never seem to be able to get the food... they nevre go up and try to find it, they only wait on the bottom for food that floats DIRECTLY IN FRONT OF THEM, i use flakes cuz i dont raise live foods...like worms, brine shrimp etc.. so what should i do? im afraid they'll starve, what should i do?