![]() ![]() Recently all-black, metallic blue, and “Goshiki” (silver or gray with orange markings) have been introduced from the Far East. Red, and red and white Ryukins seem to have an intense coloration, and these fish are truly spectacular, when large. The Ryukin comes in a variety of colors, including red, red and white, orange, white, olive or drab green, and calico. Ryukins can be kept outdoors in the summer, but most people prefer to over-winter their fish indoors. This awkward swimming motion may be due to the combination of deep body, relatively long fins, and the hump. Ryukins swim in a somewhat awkward fashion, and appear to waddle through the water. Despite their deep body shape, Ryukins do not appear to be as susceptible to swim bladder problems, as are many of the other deep bodied fish. Large Ryukins of ten to twelve inches are not uncommon, and are very eyecatching. Ryukins are large fish, both in terms of length and in terms of girth. ![]() The head is often overlooked on Ryukins, but should appear triangular when viewed from the top of the fish. The hump is composed of a combination of fat and muscle, and should extend symmetrically across the back of the fish. In some cases, the hump can take on a double appearance, with one hump starting at the back of the head and developing into a second hump just before the dorsal fin. The distinguishing feature of this fish is the hump, which starts at the back of the head, and arches markedly until the start of the dorsal fin. The dorsal fin is usually 1/3 the depth of the body, and the caudal fin, which is forked, is from ¾ to 1-1/2 times the length of the body. The Ryukin is a double-tailgoldfish, which possesses an oval body shape, which is almost round, and paired anal, ventral and pectoral fins. For our purpose, it is not essential to identify the exact locus of development, but rather to acknowledge the dedication of the fish farmers whostabilized this variety in the Far East. DevelopmentoftheRyukinoccurredintheFarEast,withclaimsbeingmade for its development both in China and Japan. The Ryukin is probably a development from the fantail goldfish and was selectively bred to emphasize the unique characteristics of this variety. Gradually, different color types were developed, and the fantail, as we know it, was finally stabilized. In the prior article, we discussed the fantail goldfish, which developed as a result of a natural mutation from the original single-tailvarieties.Thefantail was subsequently bred to achieve consistent tail separation, a deeper body structure, and elongated fins. Line Art for the GFSA standards has been provided courtesy of Merlin Cunliffe. Each subsequent article would provide detailed guidelines to appreciate and understand the characteristics of each variety recognized by the Goldfish Society of America (GFSA). In the original article for this series, we defined a number of characteristics common to all goldfish, and introduced the concept of goldfish varieties, or different types of goldfish. ![]()
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