Keeping an aquarium adds beauty and grace to your life. That elegant little world in a glass box can be your respite from the cares of the day and even can lower your blood pressure. It can be a great outlet for your artistic impulses, and educational for your kids. And when it comes to pets, you can't go wrong with fish. They eat little, require minimal space, and need no training. They never stray, bay at the moon, or leave surprises on your lawn...