![]() Interactive maps: Point Distribution Maps populations represent a complex of morphologically and taxonomically diverse forms. Goldfish has been widely and repeatedly stocked in the United States from many points of origin, including both Asia and Europe. ![]() In addition, goldfish commonly hybridizes with common carp Cyprinus carpio, giving rise to individuals that are intermediate in morphology between the two parent species. waters is actually a crucian carp x goldfish hybrid. Howells (1992b) reported that some exotic fish experts believe that "goldfish" typically observed in U.S. There are many mutant goldfish varieties and these exhibit a broad range of body forms and colors. carassius (references in Jenkins and Burkhead 1994). More recently, it has been reported that C. Others have concluded that the goldfish is a subspecies of the crucian carp Carassius carassius (i.e., C. gibelio (the Prussian carp, gibele carp, or European goldfish) from eastern Europe (Raicu et al. auratus (the goldfish, Chinese goldfish, or Asian goldfish) from Asia, and C. Many authors have recognized two subspecies in its native range: C. There has been considerable confusion concerning the taxonomic status of this species. Identification keys that include this species and photographs or illustrations are provided in most state and regional fish books (e.g., Hubbs and Lagler 1958 Becker 1983 Etnier and Starnes 1993). Distinguishing characteristics were provided in Wheeler (1978), Raicu et al. The usual life span is 6 to 7 years, with a maximum of 30 years recorded (Robison and Buchanan, 1988). It does not reach the large size attained by carp. The anal fin of the male is concave, whereas on the female it is convex. Asian cyprinids have a stiff, non-serrate spine at this position (Robison and Buchanan, 1988 Page and Burr, 1991). It can be distinguished from other Asian cyprinids by the presence of a stiff, serrate spine at the origin of the dorsal and anal fins. The lateral line is complete, with 25–31 scales in a lateral series. It possesses a long dorsal fin with 15 to 21 rays and a hard serrate spine at the origin of the dorsal and anal fins. Wild populations vary in color from gold to olive green or even creamy white. Not all individuals have the well-known bright gold color. Identification: Carassius auratus has an elongated, stocky body.
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