MISSISSIPPI STATE -- With low startup costs, easy maintenance and good looks, freshwater fish are staking their claim as a popular American pet.
Dr. Skip Jack, aquatic medicine specialist at Mississippi State University's College of Veterinary Medicine, said more money is spent on aquaria, fish, food and equipment than on dogs and cats.
"Fish are the No. 1 pet animal in the United States," Jack said.
Part of their popularity is due to them making ownership easy.
