![]() Such is the case for the Telescope Goldfish. Plastic animals are subject to human whims which may not always be in the best favor of the animal. This is the case from some dogs as well, like the bull dog breed which is prone to breathing difficulties due to their flattened snout, highlighting the similarities between these two animals. Goldfish are subject to little if any natural selection which leads to problems and unnecessary difficulties for them. The presence of so many breeds of fish and the variety among these breeds comes from the method of domestication to which they experience. The reduction of size in goldfish compared to their ancestor is a consequence of domestication as well according to Juliet Clutton-Brock (Clutton-Brock, 2012, pp 8-9). The dates for these modification in goldfish are known because they are just that, modifications that were documented in creating and maintaining breeds of goldfish. ![]() Other noticeable deviations from the original fish include telescope eye which appeared in the mid eighteenth century and lack of a dorsal fin, double tails and a short body which occurred in the Ming dynasty (1368-1644) (Tuan, 1984, pp 95-100). This began the process of domestication around 700 CE in China and the presence of color became really evident in the seventeenth century when goldfish could be bred in an assortment of colors (Tuan, 1984, pp 95-100). The first effect of domestication on this species was the mutation of color which was desirable to humans who then selected for it. The ancestor of the goldfish, the original crucian carp was a darker gray in color, had a thinner body, rounded fins and had a dorsal fin (Komiyama et al., 2009, pp 5-11). The domestication of goldfish occurred relatively recently when compared to other domesticates, yet a case could be made that goldfish are more diverse than any other species. There are more than 27 breeds of this fish, which was one of the first fish to be domesticated. No aspect of the goldfish is safe from alteration, humans have successfully changed and affected the size, color, fins, eyes and shape of goldfish. The domestication of goldfish is a very dominant this along with the ease of causing variability in goldfish produces monumental effects on this domesticate. Strict artificial selection to meet the changing desires of humans has led to and is still leading to many varieties of goldfish, making modern goldfish very plastic.
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