Nothing can add a sense of atmosphere to a room quite like a dream aquarium can. Keeping fish is a great way to entertain children, to make a single person feel needed, and to add a unique kind of decoration to a home. Some people prefer to add some color to their home with a team of professional painters (information here). In fact, you might say that raising fish is one of the most dynamic decor patterns out there, since you are literally decorating your home with living things. The scheme is never static, and you can emulate virtually any version of paradise that you want to.
Unlike other decorating ideas, though, having fish means that you have to do constant work. You can't just set up the tank and walk away; the fish require constant care. Their tanks have to be cleaned, they have to be fed, and their environments have to be kept healthy. Fish owners engage in all sorts of practices to keep their fish healthy, from playing calming music to them to experimenting with different lighting patterns. You might be one of these highly committed fish owners, or just a beginner. Either way, you need to know where you can get supplies to keep your fish alive.
Exactly where you go will depend on a couple of things. The first is where you live. Obviously, a person living in a large home will have more options open than someone living in tiny apartment. There are a lot more people in the city, and that means a lot more businesses selling fish and aquarium supplies. If you live in a smaller location, you won't be able to get the most cutting edge products for your tank, at least not for a reasonable price, even online. So you may only have one choice, whatever the local pet store has to offer you.
For people living in larger centers, though, there are plenty of different options. What you will use to determine where you buy at this point is how experienced you are when it comes to keeping fish. If you have just a simple fish bowl with a couple gold fish set up, then a big box store like WalMart will suffice. You can get the supplies you need at a very reasonable price, and it won't matter if the staff doesn't really know what they are talking about; you can always look up fish care online.
On the other hand, you might have a more exotic fish tank. That will mean you need more expertise than the average seller can provide, and better supplies as well. In that case, you want to go to a specialty store. The more emphasis the store puts on fish, the better for you.
You can start your search for supplies at Amazon.com or Petsmart.com.