1, keep a good, but koi to pay attention to the general raise the odd, there are also said to raise fish to raise 3, 6 or 9 suitable. If the tank is big enough, 9 is the best. However, the water technology must be hard, or a hundred diseases, adding annoyance.

2, has always been known as "feng shui fish", "attracting wealth and prosperity fish", not only can be kept at home, there are many people in the company put a fish tank to keep koi.