What Are the Characteristics of Koi Fish?
Koi are large, colorful, long-lived ornamental fish.
They can reach 3 feet and 40 pounds, with vibrant red, white, black, yellow, blue, and orange patterns. They are social, active, intelligent, and can live over 100 years.
Popular varieties include Kohaku, Taisho Sanshoku, Showa Sanshoku, and others. They require large ponds, strong filtration, regular cleaning, and a balanced diet.