There’s nothing cuter than a small goldfish to keep you company. It’s the most popular fish tank pet of all time! But the size of the goldfish is limited to how big your tank is. In Australia, pet owners unnaturally released these fish into the rivers. With no walls, they have grown to be gigantic goldfish often over the size of two adult hands. They kick up mud, eat other fish eggs, cause disease, and ruin ecosystems. Cute doesn’t always mean safe. Think twice before releasing your pet into the wild!
John Imm Editorial Team Manager (firstname.lastname@example.org)