[night owl]

actually goldfish are easy to keep as long as their water condition is good and clean.. as they eat a lots and of cause they make the water dirty easily. but a good water filtration system will solve the water conditions problems and they are good pets as they recognize their owners. if u find your gold fish is sick or not as active, try add a small amounts of salts into the water, this usually helps. tropical fishes are easy to keep provided you know what type of fishes they are.. some can grow very big while others cannot. if u keep both of them together, the bigger fish will eat up the smaller one.and some of them needs good water condition too.. some are very aggressive and attack each other... while gold fish don't, try read up more about the type of tropical fishes u prefer before u get them, don't buy them just because they look good.. as we are responsible for their well being and their every needs.