The colors on the body surface of fish are the richest, most colorful, and the most charming in the animal world, far exceeding those of insects and birds. When you walk into the fish aquarium, you will be dazzled by the colorful pictures, especially the tropical marine fish that shuttle among the coral reefs, which are even more dazzling and make you forget to leave.
In order to describe the beautiful colors of tropical fish, people have written countless articles. One article recorded the color of grouper and wrote: "The beautiful magenta background color turns yellow when it reaches the abdomen, and there are many bright colors scattered on the sides. cyan spots”. The golden eye bream is described as: "It has the same bright background color, plus the luster of various white gemstones, especially the reflected brilliance of cyan and light purple." "The horsetail has irregular and dark black patterns on the tulip background. The pectoral and caudal fins are beautiful orange, the other fins are yellow, and the filamentous fins in front of the pectoral fins are beautiful vermilion." The double sawfish is a small coral reef fish. Its body surface has a bright orange background, three broad, blue-gray vertical stripes on its head and body, and black or dark blue edges on each stripe. Most of its fins It's lemon color with a black narrow edge." The boxfish's "bright colors and strange patterns may be more beautiful than any other fish."
Mr. Xing Xiangchen wrote in an article introducing the colors of fish: "Yellow croaker (especially large yellow croaker) has a golden appearance with dark yellow luminous spots; bright red snapper has two sides on its back. Embedded with gem-like emerald blue flash points; the gemstone grouper living in tropical oceans is dressed in a light red dress, which seems to be inlaid with colorful hexagonal gems; and the vertical banded grouper , with three green or two silver-gray longitudinal strips alternately arranged on its sides; what is even more eye-catching is the small, exquisite, charming and colorful butterfly fish, as if painted by a masterful hand with indescribable brilliant colors, stripes and flowers. Spots, when swimming in the water, look like flying butterflies, with a moving posture.
The general colors of many species of fish, especially species with stripes, lines, spots, and markings, look the same on any individual. However, individuals of some species vary greatly, such as the boxfish mentioned above. It is rare to see two tails with the same stripe arrangement. The colors and patterns of most fish may seem meaningless from the outside, but they are of great significance to biologists. Like other organisms, fish's body color may have various biological functions such as communication and concealment, and is an important means for organisms to adapt to the environment.
Almost all fish have a certain color, some are single in color, and some are rich in color and form various stripes and spots. Biological color has many biological significances. Common biological color phenomena include covert color (protective color), warning color, eye spots, mimicry, gender color and other biological color phenomena. These are the products of long-term adaptation of fish to the environment. Survival and reproduction are of great significance.
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