Well why? I see them sometimes go after the food, take it in their mouth, then just spit it back out. Is that their way of saying "we don't like this, you can keep it and shove it?"
My fish only spit out the food that was on sale. AKA the cheap food. haha
It is like they are tasting the food, and they decide they don't like it, so they spit it out. Good question, I would like to know the real answer. Hmm...:thinking: