Talk:Eggs/@comment-46.142.64.188-20160728090516/@comment-27160481-20160803221720

For good measure, pickup the eggs and drop them again. If they still don't hatch after some time, try building a 2nd or 3rd story to the tank. I wouldn't think it would be a problem, but maybe its a larger creature and the size of the tank is preventing the egg from hatching.