My cons [parents + fry] are spending a good amount of time at the top of the aquarium [surface of the water. It's almost as if they are trying to get away from something. Nothing has been added. Water stats and temp are all good. Convicts don't have labyrinth [spelling?] organs do they? This couldn't be from lack of oxygen could it? Could it be a side effect of being cramped? After all they are in a 29 gallon? But I don't think that's it because there is a lot of tank that they aren't in. Maybe they are afraid of their parets? But the parents stay at the top with the kids?