The majority of people of start off with a very small aquarium not realizing they will soon become hooked. Before too long they are back to the pet shop buying another one the next size up.


Tropical fish are categorized by their nature. Like humans, some are loners and will bite the head off anyone that comes too close, some like only their own species and don't mix too well with others, and some are friendly, outgoing, and love spending time with anyone who comes their way.


There are certain types of tropical fish you should buy when introducing them to a new tank. You must be sure to buy hardy fish as the levels of ammonia and nitrate in your tank will fluctuate before evening out over time, and not all tropicals can survive these changes.


Some dainty, delicate and fragile looking tropical fish can grow extremely large very fast! This will mean a further trip back to the pet shop where the owner will greet you rubbing his hands in glee.