If you take a walk around San Francisco, it won’t take long before you see a koi fish. Not a real one, of course, although the bright orange-and-white graffiti art has the fluidity of a real fish ...

Here's what you need to know about the fish and ... Japan's koi exports doubling over the past decade to 6.3 billion yen ($43 million) — one-fifth of them shipped to China, the top Japanese ...