Black koi fish, known as herring, is a primitive species in koi fish. There are many varieties of it, although they are mainly black, but there are also some white patterns on their bodies, which look very beautiful. Common is four white koi fish, black and white, set each other off. In addition, there is a white koi fish with feathers, a koi fish with only white at the end of pectoral fin. There is also a kind of koi fish called Bald White. Compared with koi fish Feather White, it has white pectoral fins and a white nose and mouth. 1. What's the name of Black koi fish? Black koi fish is herring, a primitive species in koi fish. There are many varieties of it, although they are mainly black, but there are also some white patterns on their bodies, which look very beautiful. Common is four white koi fish, black and white, set each other off. In addition, there is a white koi fish with feathers, a koi fish with only white at the end of pectoral fin. There is also a kind of koi fish called Bald White. Compared with koi fish Feather White, it has white pectoral fins and a white nose and mouth.

2. What varieties are there in koi fish? 1, red, white and koi fish fish: As the name implies, red, white and koi fish are composed of red and white. The most important thing for red and white fish and koi fish is that their heads should be red, and the colors on their bodies should be evenly and symmetrically distributed.

2. Taisho Tri-color koi fish Fish: Taisho Tri-color originated from Taisho era, and was named Taisho Tri-color koi fish Fish because of its black, white and red colors. The main ornamental value of this variety in koi fish lies in its tricolor and glossy blue background ink spots. If these dots are distributed on the shoulders, they can be called top grade.

3. Writing carp: Writing carp, also known as writing koi fish, is a hybrid of writing carp and golden carp. Common writing carp has a white background and black ink spots on its body. Like ink drops on white paper, the ink spots on carp are generally larger.