That's funny. They didn't want fish at all, now they want fish in the new tank asap
They just don't understand the cycling process and want the tank looking nice for Christmas. Will it be ready by Christmas?
Parents don't always encourage their children's hobbies. My mum let us do pretty much whatever we wanted as long as we looked after the bird, fish, animal and didn't get in trouble with the law. If anyone commented on how nice something looked, she took the credit for that
Unless one of your parents is into the same things you are, they probably won't want much to do with the tank or whatever your hobby is at the time. Don't be discouraged by it though, most people that have fish tanks are the only ones in their family that is interested in fish. One of my cousins had fish and none of his immediate family cared about fish except eating them. I was the only one in my house that kept pet fish, dad used to catch and eat them, mind you so did I when I was younger. More recently one of my younger cousins started keeping fish and none of her immediate family had any interest in fish. everyone I have worked with in pet shops have been the only ones in their family to keep fish. It's your hobby now, just enjoy it