What is the yellow scaly fish of freshwater fish in the river?

Generally, it looks like mirror carp, a kind of carp. It is a variant of the European carp, the skin is glossy, as if the mirror as smooth and glossy obvious, so it is called mirror carp. In our traditional culture, carp for the long fish, "food on the flavor". Poetry" said "not its food fish, must be the river of carp", "the river of carp" refers to the Yellow River carp.

Mirror carp (scientific name: Cyprinus carpio var. specularis) is native to Europe, China from West Germany introduced varieties, after 20 years of systematic breeding of the Heilongjiang Fisheries Research Institute, has been selected and bred for most of the areas of China's culture of the German mirror carps selected line. Mirror carp mostly inhabits in the lower and middle layers of the waters, and the bottom mud and sandy static waters of the eutrophic waters are dominated by the collective group swimming habits, and it is an omnivorous fish, with small invertebrates and benthic animals as the main ones. Mirror carp heat and cold resistance, adaptability, can survive in low oxygen content of the water, the mirror carp spawning large, mixed diet, fast growth rate, from the human culture environment to escape the mirror carp, it is easy to reproduce in large quantities in a short period of time, in the fixed body of water to develop into a high-density populations, so that the waters become turbid. Their habit of nibbling on underwater sediments destroys and uproots many aquatic plants, which were originally important habitats for native animals, and escaped mirror carp can easily have a negative impact on the ecology of the water body, which is why they have been listed as one of the world's top 100 invasive alien species.

The mirror carp came into existence because of a genetic mutation that changed the pigmentation of the mirror fish's body surface, giving it a variety of colors and patterns. Then after many generations of artificial breeding to optimize and fix our favorite characteristics, the lovely mirror carp strain was born.

The value of a mirror carp is measured by its size, color and pattern. While it is relatively easy to control the inheritance of size and color from parent to offspring, the pattern of the body surface, which is controlled by multiple genes, is difficult to predict, so keeping mirror carp is really a matter of both skill and luck.