For years now, pet stores have been selling goldfish bowls and telling customers that goldfish can live in them. This brings us to the following question. Do goldfish belong in bowls? This is false for many reasons. First, every goldfish needs at least 10 gallons of water. In order for your goldfish to survive, you also need great filtration and a healthy living environment.

The 10 gallons per goldfish rule. It's a simple rule but it is rarely applied. The fact that many big pet stores sell fish bowls and don't know much about fish in general is one of the major problems when it comes to an...