Salt water tanks are expensive and finicky, but saltwater fish are the most beautiful by far. You have to be prepared for the expense, and might want to consider a service to monitor your water unless you plan on being almost obsessive about checking it (or you will spend an arm and a leg on fish). I would most definitely NOT put the tank on that fireplace though.. put it on a seperate stand... even a few degrees fluctuation in the tank and you can loose fish.. if you have anything nearby radiating heat and kabloie you have dead fish... Buy a seperate stand..that's my two cents.. I used to breed a ton of different fish, but I refused to do the salt water thing because of how finicky and expensive it is. Redbelly Pirhanas and Firemouth Cichlids were exotic enough for me
