This is particularly true of the male ryukin goldfish. However, although ryukin goldfish are generally considered to be peaceful fish, they can sometimes display aggressive tendencies towards other fish that are much smaller than themselves. The ryukin goldfish has a calm and peaceful temperament most of the time. In the wild, or when kept in a pond, the ryukin goldfish can grow to a length of 10-12 inches. This is considered a long lifespan for a goldfish.Ī fully grown adult ryukin goldfish is between 6-8 inches long when kept in an aquarium. Its lifespan in captivity is usually shorter, and it can be expected to live for 12-15 years. You can find the ryukin goldfish in the wild, where it can live for up to 20 years. In the past, it has been referred to by numerous other names, including the onaga goldfish, the nagasaki goldfish, the fringetail, the Japanese ribbontail, and the fantail. The ryukin goldfish was first seen in Japan as early as the late eighteenth century. This is where the ryukin goldfish gets its name from. Originating in China, this fish is believed to have come to Japan from the Ryukyu Islands, located between Taiwan and Japan. The ryukin goldfish is known by the scientific name Carassius Auratus, and it belongs to the Cyprinidae family of goldfish. Lifespan: 10–15 years Size: 6–10 inches Diet: Omnivore Family: Cyprinidae Minimum Tank Size: 10 gallons Tank Setup: Freshwater Compatibility: Similar sized freshwater species Advertisements Category Rating Care Level: Easy Temperament: Placid Color: Various shades of red, white, and orange, with black markings.
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