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In this video, dozens of 15-18 inch speckled trout are attracted to a 1000 W green light mounted on a pier.
A fishing light attractor is a fishing aid which uses lights attached to structure above water or suspended underwater to attract both fish and members of their food chain to specific areas in order to harvest them.
Just as fisherman seek conditions where the chance of catching fish is optimized, so fish seek areas where the chance of catching their food is optimal. Most game fish seek waters that are rich in food such as smaller fish, insects or shrimp. And, it follows, that these smaller fish, insects and shrimp congregate where their food is most concentrated.
Scientific research shows that all of this food chain has eyes sensitive to the colors of blue and green. This probably evolved because the water that these animals live in is blue to greenish in color, depending upon how much and what kind of particulate matter is suspended in the water. Pure water containing little particulate matter scatters light in the blue-purple region of the spectrum. Human eyes see this water as blue. If water is rich in nutrients and contains photosynthetic microorganisms and plants, the chlorophyll in their bodies preferentially absorb red light. The remaining, unabsorbed light is transmitted and scattered, thus giving the water a greenish appearance. If the water contains a lot of organic material from decaying plant life or suspended sediment, it may take on a yellow-brown color.
Fish and some members of their food chain have color receptors in their eyes optimized for the light of their pace. Eyes that can see a single space color can detect changes in light intensity. This is equivalent to a world in black, white and shades pink polo shirts of gray. In this simplest level of visual information processing, an animal can recognize that something is different in its space.e., that there is food or a predator ver there. Most animals living in a lighted world have an additional visual resource: color vision. By definition, that requires that they have color receptors containing at least two different visual pigments. To efficiently perform this function in water illuminated with light, an aquatic animal would have visual pigments sensitive to the background pace color and one or more visual pigments offset from this blue-green region, say, in the red or ultraviolet region of the spectrum. This imparts a clear advantage to these animals because they can detect not only changes in light intensity but also contrasts in color. Many fish, for example, have two color receptors, one in the blue region of the spectra (425-490 nm) and the other in the near UV (320-380 nm). Insects and shrimp, members of the fish food chain, have blue, green (530 nm) and near UV receptors. In fact, some aquatic animals have up to ten different classes of visual pigment in cells of their eyes. By comparison, humans have three with maximum sensitivities in the blue (442 nm), green (543 white polo shirts nm) and yellow (570 nm). It is the differential responses of these receptor cells that enable color vision.
It has been known for a long time that a light attracts fish, shrimp and insects at night. But what is the best color for a light attractor? Based on the biology of visual receptors, the light should be blue or greenhe space colors of fish and members of their food chain. However, while blue or green colored light is desirable it is not essential. Even if fish or members of its food chain have color receptors in their eyes most sensitive to the blue or green spectrum, these same receptors have a broad but decreased sensitivity to other colors. purple polo shirt Therefore, if a fishing light source is intense enough, other colors will also attract. For example, a sodium vapor light with its characteristic yellow color will attract fishf intense enough. A fishing light attractor can also be white light because part of its total energy is in the blue to green region.