Fish can be enjoyable companions that are fun to watch. But fish are not for everyone. They can take up a lot of time, depending on what type of fish and what size tank, but they can be beautiful and fascinating. Freshwater aquariums are a lot more common than saltwater because they are cheaper, easier to take care of, and easier to set up. Saltwater, although more time consuming and costly, has more interesting and prettier fish. Be sure to see all the types of tanks available!