1. According to the query of koi fish. Com, the price of 40cm in koi fish is between 20 and 50 yuan. Koi fish is a fish animal of CYPRINIDAE. Up to now, there are about 100 varieties in koi fish.

2. According to query 39, koi fish can't be eaten, because in the process of raising koi fish, the breeder may add some drugs to the feed for better ornamental effect, so that it can't meet the edible standard.