Another interesting thing about fish is that they hit the top of the water very hard causing any of the sinking food that isn't sinking to sink (sink sink sink). Anyways, they hit the water too fast to really see, but I've been curious if they just hit the water to knock the food down because they know they can't ingest the air. It would be a cool thing to test/study because it would demonstrate a new level of intelligence on the fishes part. It could show that they know that actually swallowing large amount of air could kill them? Yay science 
