I think its a bit early to tell :D I think its normal.. I'm worried the airstone might make it too turbulent in the bowl, try it without the fry and check the current.. Pumpkin is a shark in disguise XD
Airation? I have a really small airstone, do they need airation? Pumpkin eats like 1" bloodworms daily, so I don't trust her -_- and I would need to remove the gravel, be a pain in the arse....hey, is it normal if they all look like females?