Fish also have five major sensory organs, although in terms of content and expression is not exactly the same as the five major sensory organs of human beings, but it is also very powerful in function, even more powerful than human functions!
Because I love to write some biological articles, many anglers like to ask me some questions about the fish's vision, hearing, smell and other aspects in private, this time to a big synthesis, everyone really want to learn, if you have this one is enough!
Fishing activities
It is no exaggeration to say that the five major sensory organs of fish are closely related to fishing activities and have far-reaching influence! The five sensory organs are skin sensory organs, visual sensory organs, olfactory sensory organs, taste sensory organs and auditory sensory organs.
Friendly reminder, this is a long article! I think I should be the first person to use the five senses of fish and its functions and fishing activities so comprehensively, and I myself attach great importance to this article, which is a small fishing research result of mine!
Haha, no blowing, no nonsense, into the main text, interested can collect this article, for any time to read.
<h1 class="pgc-h-arrow-right" > the relationship between skin sensory organs and fishing activities</h1>
Everyone knows that fish are warming animals, body temperature will change with the change of water temperature, fishing is to find a place where the water temperature is suitable for the fish to live and the water temperature is suitable for fish activities!
In addition, fish are the most sensitive to the perception of flowing water, like running water is almost the nature of all fish, fishing water will also be more than fishing backwater harvest, even if there are only some faint changes in flowing water in the water, fish can accurately perceive.
The environment in the water is very complex, the density of water is much greater than that of air, and the penetration ability of light in water is far worse than that of air, so the visual environment in water is much worse than in the air.
The above-mentioned problems, presumably many anglers know that they do not know why, only know that the fish have this ability but do not know where this ability comes from, how powerful this ability is!
These are the roles played by the skin sensory organs of fish, and the skin of fish has a variety of sensory organs, such as touch, feeling water flow, water temperature, determining orientation, etc. Simple structure for bud-like protrusions, complex structure for the mound-like sensory organs, for these biological terms, we anglers can not know, know that this thing is very powerful, powerful function can be.
The side line should not be unfamiliar to anglers, right? What we can see with the naked eye is the lateral scales on both sides of the fish's body, and there will be a small black dot in the middle of these scales, which is actually a small hole, and these black holes are connected together, looking like a line, which is the lateral line! The small hole is connected to the lateral line tube inside the skin, which is a highly developed neural tissue.
The lateral line consists of lateral line tubes on both sides of the body and sensory tubes in the head, and the peripheral organs of the lateral line are called sensory mounds, which can penetrate deep into the skin or enclose in the sensory tubes to avoid mechanical damage or overstimulation, and the lateral line is innervated by part of the cranial nerve.
The main function is the directional effect of long-distance contact! The visible environment in the water is poor, especially in dark or turbid waters, where the lateral line system performs the task well. The movement of the bait object and the predator creature will produce sound waves, which will be transmitted to the surface of the object and then reflected back, which is equivalent to echolocation.
In addition, the direction of the water flow and the weak change of water flow can be sensed, the way is the lateral line hole, the water flow will be converted into pressure, through the side line hole to the mucus in the side line tube, and finally stimulate the sensory central nervous system, so as to respond.
The lateral line can help fish find food at night and accurately locate it! Still worried that night fishers can't see the eating hook? Are you still worried that the muddy water will not find the bait after the rain? The side line can also locate the danger, don't feel that when fishing, you can't feel the blind tossing fish on the shore!
The most cattle function is to feel the sound waves, do you know what it means, to put it bluntly, everything that enters the water will produce sound waves, as long as it will produce waves in motion, it is easy for the fish to perceive, this is the meaning of teasing fishing, but also the reason for better fishing with live bait!
Skin sensory organs to this end of the conversation, how does it feel, do you feel suddenly enlightened? Didn't you find it helpful for fishing?
<h1 class="pgc-h-arrow-right" > the relationship between the visual and olfactory systems and fishing activities</h1>
Seeing this subheading, some people may wonder why we should put sight and smell together, and shouldn't smell be the most important to put together with taste? At the very least, related, or simply separate?
(1) Let's talk about smell first! The olfactory organ is a chemical sensory organ, and the fish sensory odor is done through the olfactory sac! Police dogs have a very smart nose and a strong sense of smell, and the olfactory ability of fish is no less than that of police dogs, and the olfactory ability of individual fish species can reach an amazing level.
Fish have a sense of smell as sensitive as a police dog
For example, eels can feel the thrill of adding 1g of alcohol to 350 billion tons of lake water! This ability to smell is amazing isn't it? Of course, most freshwater fish have no developed sense of smell than marine fish, but they are still extremely capable!
(2) Let's talk about vision! Fish have no eyelids, which means that fish should never try to close their eyes. However, the structure of the fish eye is not simple, the sclera, choroid, retina, lens, cornea, iris and so on are not many. However, the fish's eyesight is not necessarily good!
Fisheye
The production of fish vision is produced by light entering the fish eye after passing through the water, which is a complex neural reaction process, not much to say here, for anglers just need to know that this process is not simple!
However, fish live in the aquatic environment. As we all know, when light passes from a less dense medium such as air to a denser medium such as river water, it will cause refraction! After light is refracted, reflected and absorbed by water through the cornea, aqueous fluid, vitreous fluid, the amount of light that fish eyes can obtain is greatly reduced than in the air!
Be sure to remember the three words "myopia", so the fish's vision is not good, and you can only see objects at close range! Some freshwater fish are not visible at 40 centimeters away.
Myopia is to see distant objects clearly, but it does not mean that you can't see, just see vaguely! Fish can see the object on the shore, the premise is that after the light on the shore is refracted by the water, the refraction angle is 48.8 degrees, and it can also fall into the fish's eye, and the fish can see!
To put it bluntly, you sit on the shore fishing, the fish may not be visible, once you stand up and stretch out, the fish under the water may scatter and run away, of course, this is talking about the light in the shallow water! So when fishing, try not to walk back and forth.
Reflection in water
In addition, in freshwater waters, the red light disappears within 5m of the water depth, and the green light disappears within 13m, so the fisheye is the least sensitive to the red light, and is more sensitive to yellow, green, blue and purple! Why is the night fishing lamp blue? The fish are not afraid! Why use yellow lights to lure fish with lights? The fish love it!
Some anglers say that fish in white clothes on the shore are the most feared, but there is actually no scientific basis.
(3) The above has made a lot of analysis of fish vision, and the matters to be paid attention to in fishing activities have also been explained, and there is still an important work to be done, that is, the contrast between the smell and visual functions of fish is also the main reason for putting them together!
Don't the freshwater fish we often catch have better eyesight? Is there anything bad about smell? The answer is yes!
Although fish as a whole are myopic, fish that are accustomed to living in the upper layers of the water body have significantly better vision than fish living in the lower layers of the water body, and their sense of smell is obviously lagging behind that of the lower fish!
This is the result of the long-term evolution and degradation of fish, which is of great significance to the guidance of fishing activities, when fishing for the lower fish, you have to find a way to play its olfactory foraging role, such as carp, catfish, ga fish, etc.; when fishing for upper fish, you have to find a way to play the role of vision, such as white strips, cocked mouth, black fish, etc.; when fishing for the bottom, you must pay attention to the sense of smell to attract fish, and when fishing floating, you must pay attention to visual and olfactory considerations!
Well, at the end of this section, I don't know how it feels, is it confused? Read it in, and there will definitely be a reward.
<h1 class= "pgc-h-arrow-right" > the relationship between taste organs and fishing activities</h1>
The taste of things is relatively simple, just to talk about the basic knowledge points related to fishing, it is also very easy to understand.
The taste function of fish is performed by the taste buds, and the taste buds of fish are widely distributed, widely distributed in the lips, tongue, throat, gills and tentacles!
Here we want to focus on the tentacles, which freshwater fish we often fish have tentacles? Each angler is estimated to be able to name a few, and don't forget, there are also carp. Fish with tentacles can find food through the system of taste on the tentacles!
Have you found that fish with tentacles are generally bottom fish, that is, fish with poorer vision, tentacles are an important organ for them to perceive food, and there is a rich taste bud system on it, which can complete the perception of food without relying on light, which is why night fishing is easy to catch these fish!
Anglers, look at the above four flavor types, and then look at our current bait flavor types, is the type has far exceeded these four!
Because there is not much scientific material in this regard to prove that each type of bait flavor can correspond to the appetite of a fish, from my own feelings, the bait is closer to these four flavor types the best effect, the rest of the flavor types are extensions, the actual role will never be greater than these four basic flavor types.
For example, grass carp like corn, so what flavor of corn do you like? Over the years, I have found that there are only two best, one is fermented corn and one is tender corn, one is sour and one is sweet, the rest of you let the corn come out of the flower, not necessarily these two kinds of effects are good, so, I personally feel that the current bait market taste type is strange, but the meaning is not great!
<h1 class= "pgc-h-arrow-right" > the relationship between the auditory organs and fishing activities</h1>
The hearing system of fish is also very developed, and some of its functions are played by the lateral line system, which can be seen that the side line system is a special organ of fish, and many aspects have its shadow.
According to measurements, fish can hear 2 to 2800 vibrations per second, while humans can only hear 16 to 2000 vibrations, some lower frequency vibrations such as earthquakes, humans can not hear, but fish can hear, and in advance began to become restless!
This ability to perceive vibrations at lower frequencies can also be used by fish to find food, and the ability to feel sound waves mentioned at the beginning of the article actually refers to this low-frequency vibration, and although the lateral line system is attributed to the skin sensory organs, it is also the most effective supplement to other sensory organs.
The content of the above and the use of fishing activities in the first part of the article are described, here is not much to say, mainly reflected in the dynamic fishing and teasing fishing, to put it bluntly as long as the bait in the water is active, it is better than the static fishing effect!
Let's talk about the things to note about fishing within the normal fish hearing range! Can a fish hear a loud talk? Can the stomping fish hear it? Speaking loudly and stomping feet which fish hears more clearly and is more afraid?
The propagation of sound is greatly affected by the density of the medium, the propagation speed of sound on solids is faster than the speed of propagation in air, and the propagation speed in liquids is slower than that of solids but also faster than in air.
When the sound is introduced into the water from the air, the intensity is weakened by the denser water body, and the propagation speed becomes faster, which means that the whispering fish may not be able to hear, but the loud talking fish can feel, if you roar, the fish on the distant water surface can quickly react and escape from the water.
When stomping the foot, the sound is transmitted from the solid into the liquid, the intensity increases, the propagation speed is weakened, and the propagation distance is reduced, which means that the shore is slightly stomped on the foot, and the fish near the shore can feel it, and the effect heard is amplified, which is easy to frighten the fish.
In summary, the sound emitted by the angler on the shore is affected by the fish in the nest, and stomping on the feet has a greater impact than speaking loudly, so when the angler is fishing at a depth of 2 meters, normal talking has little effect on the fish, but if the shore is running, it is possible to quickly scare the fish away, which is why fishing for big fish should tiptoe and try not to speak loudly!
At this point, the full text is coming to an end, and the following is a comprehensive analysis of the summary!
< h1 class="pgc-h-arrow-right" > summary analysis, fishing activities should use these contents comprehensively</h1>
It can be seen from the whole text that the fish's foraging ability is very strong, but it is found that the bait often relies on the sense of smell and taste, and the vision does not dominate (except for the upper fish). This is the main reason why fish can forage normally at night, and it is also the reason why the white strip is not fierce at night! Because the vision of the white strip is developed, the sense of smell is relatively backward.
Fish have a powerful lateral organ, this magical tissue can help the fish's other organs to perceive weak changes in water flow and direction of water flow, locate dangers and find food at a distance!
Fish's perception of food flavor types is not rich, and too many bait flavor types actually mean little! The hearing system is unusually well developed, so be quiet when fishing.
The article ends here, I personally feel that this article is very comprehensive, and it is very clear to explain some of the phenomena in fishing activities! If you don't have the patience to read it, it means that you haven't read it yet, collect it first, and then have time to read it later!
★ Original article: Yao Laodao