Thanks for being responsible!

A leopard gecko would make a great pet for your daughter. They are mellow and easy to tame, don't get very big, and don't require a whole lot of space or maintenance. They are a great starter lizard to get you ready for that iguana later on

I love saltwater aquariums, the fish are so beautiful. I would love to have one, but I don't think I would be able to keep it maintained with all the salt levels, PH balance, ammonia level, temperature etc. If I do ever get one, I would probably hire somebody to come in once a week and keep it maintained and clean for me.