ihave noticed my archer has been coughing up small amounts of food could this be from stale old pellets or is it just wat fish do if there too full he is still very active and colorful he also still eats alot but is the throwing up a major health concern or is it the food im feeding oram ifeeding too muchi feed him three to four hikari floating carnivore sticks he is about two and a fourth inches long he is in my brackish tank with my gtile who has no probs with food but ??