It is a general term for a class of ornamental fish species that have been artificially improved. They are relatively large, with a body length of up to 0.6-1.5 meters [2] [21], and weigh 10-45 kilograms. The scales come in various colors and types, including whole scales, few scales, and no scales. Body color is influenced by pigment cells and can present rich color changes. Therefore, it is known as the "king of ornamental fish" and is also referred to as the "living gem" and "art piece that can swim". Originating from China, its ancestor is the red carp, which is native to China. Later introduced to Japan, after years of crossbreeding and breeding, the distinctive red carp was formed, which was renamed as koi after World War II.

It is an ornamental fish originating from Japan, belonging to the Cyprinidae family, known for its bright golden color and elegant body shape. The body color ranges from dark orange yellow to bright gold, usually shining with a charming luster under sunlight. The body is short and wide, with large and neat scales. The head is usually rounded, and the mouth is slightly upward. It has a streamlined body and a wide tail fin. Relatively gentle in personality, usually coexisting peacefully with other fish. Strong adaptability, able to survive under various water quality conditions, but it is best to raise in clear and oxygen rich water. In Japanese culture, koi is regarded as a symbol of longevity and prosperity.

It is a general term for a class of ornamental fish species that have been artificially improved. They are relatively large, with a body length of up to 0.6-1.5 meters [2] [21], and weigh 10-45 kilograms. The scales come in various colors and types, including whole scales, few scales, and no scales. Body color is influenced by pigment cells and can present rich color changes. Therefore, it is known as the "king of ornamental fish" and is also referred to as the "living gem" and "art piece that can swim". Originating from China, its ancestor is the red carp, which is native to China. Later introduced to Japan, after years of crossbreeding and breeding, the distinctive red carp was formed, which was renamed as koi after World War II.

It is a general term for a class of ornamental fish species that have been artificially improved. They are relatively large, with a body length of up to 0.6-1.5 meters [2] [21], and weigh 10-45 kilograms. The scales come in various colors and types, including whole scales, few scales, and no scales. Body color is influenced by pigment cells and can present rich color changes. Therefore, it is known as the "king of ornamental fish" and is also referred to as the "living gem" and "art piece that can swim". Originating from China, its ancestor is the red carp, which is native to China. Later introduced to Japan, after years of crossbreeding and breeding, the distinctive red carp was formed, which was renamed as koi after World War II.

It is a general term for a class of ornamental fish species that have been artificially improved. They are relatively large, with a body length of up to 0.6-1.5 meters [2] [21], and weigh 10-45 kilograms. The scales come in various colors and types, including whole scales, few scales, and no scales. Body color is influenced by pigment cells and can present rich color changes. Therefore, it is known as the "king of ornamental fish" and is also referred to as the "living gem" and "art piece that can swim". Originating from China, its ancestor is the red carp, which is native to China. Later introduced to Japan, after years of crossbreeding and breeding, the distinctive red carp was formed, which was renamed as koi after World War II.

It is an ornamental fish loved for its unique appearance. The body is flat, especially its long dorsal and caudal fins, which when unfolded resemble the wings of a butterfly, hence its name. Originating from Asia, especially China and Japan, it is very popular in aquariums and is often used to decorate and beautify aquariums. They have specific requirements for water quality, temperature, and food. I like clear and warm water environments, and I need protein rich foods such as small insects and fish food. In addition, butterfly carp has a gentle personality and is suitable for co feeding with other gentle fish species.