A salt water aquarium is not a toy and shouldn't be wrapped up as such.
By buying a fish tank you are taking responsibility for the care of these beautiful creatures and this is not something you should enter into lightly.
In the wild, fish have to take care of themselves.
They can move away from various perils and learn how to look after themselves.
But in captivity they rely solely on their owners to look after them as they have nowhere to run or hide.
They have no protection against dirty water or contaminants being allowed to get into their tank.
They cannot protect themselves if you buy species of fish that just do not belong together or you put too many or too few into the tank.
So before you jump into buying a salt water aquarium take some time to familiarize yourself with the fish.
Learn about their anatomy and biology.
Take time to develop an understanding of their care.
You will have certain tasks that you need to do on a daily basis and others that need to be done on a regular basis.
Learn about proper feeding, keeping water quality high and what type of shelter they need.
In other words learn to walk before you run.
When you are ready to buy your fish, use a good aquatic dealer.
His premises should be clean and tidy.
He should be prepared to answer your questions even if they seem very basic.
He should want to help you provide a good home for these creatures.
Only when you have fully mastered how to run a salt water aquarium properly should you look at breeding or buying specialty fish.
Develop your talents as an aquarist.
Learn from your mistakes as you will make them but there is a huge difference between making a genuine error and being negligent.