Are Japanese Koi Fish Freshwater or Saltwater?
Source: bing.com Koi fish, also known as Nishikigoi, are a species of ornamental fish native to Japan. They come in a variety of colors and patterns, and are widely kept in ponds and aquariums across the world. But the question often arises: are Japanese koi fish freshwater or saltwater? What Are Japanese Koi Fish? Koi fish are a species of ornamental fish native to Japan. They are descended from the common carp, and have been bred for over a thousand years....