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Tropical fish include fish found in tropical environments (found close to the equator) around the world, including both saltwater and freshwater species. The term tropical fish refer to only those requiring fresh water. Saltwater tropical fish referred as marine fish but to be accurate saltwater fish are truly tropical fish. Tropical fish are imported from there native waters as well as domestically bred. Keeping tropical fish is a great hobby.
How do you decide which tropical fish is best for? An important factor while purchasing tropical fish is the color. Another factor is that far too many people purchase poor health fish. It is very easy to see if the fish is sick, most of sick fish just don't eat. Don't be shy and ask the seller to feed the fish before you put your money on it. Sick fish with ich disease or fin rot disease for example are easy to noticed, "Waste" 5 minutes and check your future fish, its skin, behavior and its vitality.
There are few rules we should remember while we keep our tropical fish, first rule is to be patient. A high percentage of people do not take the time to read, learn and study up on the hobby before getting started. Second rule is not to overload the system, placing too many new additions into the tank can cause ammonia and nitrite to rise. The third rule is to remember to maintain our tropical fish tank on a regular basis. By maintaining your tank properly (water changes, test water quality) you can avoid many problems.
There is also the attraction that once the tank is up and running the required effort needed to keep tropical fish is relatively low, in-fact there is hardly any restriction to one's normal life. Keeping freshwater tropical fish is the ideal starting point to this rewarding hobby and can be done so by almost any age group, even children (best start with the family), with limited supervision. | 
