Your question should be reversed.

Koi fish is a variety of red carp.

Koi fish is a kind of brightly colored carp, named for its bright body surface and bright color.

Red crucian carp, formerly known as golden crucian carp, is the ancestor of goldfish, with the same size and tail fin as ordinary crucian carp, slender and short. Carassius auratus has strong physique, strong resistance and adaptability, wide feeding habits, no need for fine management and simple feeding; If raised in a pond, if the bait is sufficient and grows rapidly, the weight of a three-year-old can reach more than 500 grams, the body length is about 30 cm, and the longest can reach 50 cm. Besides red, its colors are silvery white and red and white.

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