#My life is also a headline #Many anglers are not only good at fishing but also good at talking, anglers get together to have endless topics, the content is naturally related to fishing. There is a fishing tackle shop near the community where I live, and fishing friends often gather there to "swing the dragon gate array", sit together, drink the free tea provided by the shop owner, and start to talk about the mountains in the South China Sea and the North of the World, as long as the topics related to fish are their talking points.
This article will share with you ten cold knowledge about fish, most anglers do not know or do not know all of them, after reading to increase everyone's talk about the mountains.
First, fish will also be thirsty
In everyone's perception, fish live in water and naturally do not get thirsty. But in fact, fish are thirsty. It's just that their way of drinking water to quench their thirst is different from that of people, people drink water with their mouths after they are thirsty, and fish can use their skin to drink water in addition to their mouths when they are thirsty. Fish that live in fresh water generally have higher body fluid concentrations, so that fresh water seeps into its body through the skin. The concentration of body fluids of fish living in seawater will be lower, and it is necessary to take the initiative to drink water to quench thirst.
Second, fish also sleep
Fish's eyes don't close like humans, so don't fish have to sleep? The answer is no, fish also need to sleep. It's just that fish sleep with their eyes open and will find a relatively secluded, quiet place. So when you find a fish in the weeds or in the cracks of the stones, and the fish stops there motionless, it is probably sleeping.
Third, fish can also be drowned
Fish are animals living in the water, if who says that fish will drown many people do not believe, but in the fish is that some fish will cause physical hypoxia in the water for a long time, will be drowned, such as the more familiar black fish, black fish gills are degraded, can not survive like other fish only by filtering oxygen in the water, it needs to swallow air alone to absorb oxygen, so we often see black fish frequently outcropping on the surface of the water, many anglers are also using this to judge that there are black fish in the water or find black fish.
Fourth, the fish will also "walk" backwards
We humans can walk backwards on land, can fish swim backwards in water? The answer is yes, but not all fish swim backwards, and the electric eel in the eel family is a master of swimming backwards, relying on swinging its long tail fin forward or backward, very freely, and sometimes standing and swimming upright.
5. Fish can also leave the water
Fish are inseparable from water is the consensus of everyone, but everything can not be ruled out exceptions, living in some African rivers lungfish can directly breathe air after leaving the water, because its physiological structure is different from ordinary fish, mainly fish bladder has many small air sacs, similar to the lungs of terrestrial animals, resulting in it can survive for years after leaving the water. When they encounter drought, they use dry mud and skin mucus to form a protective sac, stay in it without eating or drinking, and have been recorded to survive in it for up to 5 years.
6. Scavengers do not "clear the way"
Many fish farmers use scavenger fish to clean the bait, algae and other dirt in the fish tank to achieve the role of cleaning the fish tank, but adult scavenger fish eat a huge amount and often feed on the seedlings of other fish; When the fish is sick, it also attaches to the fish's body and gnaws at their wounds. In addition, it excretes a lot of feces, to a certain extent, the scavenger fish not only does not "clear the way", but will make the water quality environment of the fish tank worse.
Seventh, fish can eat food without mouth
Eating is one of the important functions of the mouth, when it comes to eating, you will think of the mouth, but some fish do not all use the mouth to eat, such as silver carp, the main way to obtain food is to use the filtering function of the gills to retain detritus in the water, so they are called filter feeding fish. A few days ago, I wrote an article "The "mouthless tarpon" with a closed mouth appeared in Jiaxing, Zhejiang, is it to avoid being caught? It is about the white and fat silver carp that still grows together in the upper and lower mouths.
Eight, the taste perception ability of fish is 10 times that of humans
Humans only have taste buds on the tongue and can perceive taste, but fish have taste buds distributed almost all over their bodies, including on their skin, including their fins, and they have the function of detecting the taste of surrounding water to judge the location of food. For example, catfish, it has nearly 100,000 taste buds distributed on its body, about ten times more than humans, so anglers should not fish with human when matching fishing bait flavors.
9. The age of the fish can be known through the scales
In addition to judging the age of a fish by specialized knowledge or special equipment, it can also be judged by the texture on the scales. In spring and summer, fish grow fast, the texture is wide, and in the autumn and winter growth rate is slow, the texture is narrow, a wide and narrow form a growth ring, and the tree cross-section of the annual ring is a truth, a growth ring represents one year old, is it very convenient to judge?
Not all fish are "cold-blooded"
Everyone believes that fish are "cold-blooded" animals, body temperature will change with external changes, experienced anglers will judge the desire of fish to eat according to temperature changes, not all fish are "cold-blooded", in a wide variety of aquariums some fish are exceptions, such as tuna, swordfish, sardines, moonfish, and cetaceans (whales are technically called fish but not fish), they have their own constant body temperature, will not change with the change of external temperature.
Write to the end
Several of the above ten cold knowledge are individual varieties in the army of fish, which belong to individual cases, so if you use it as a talking point of Kan Dashan, you must not be reduced to a tool of "bar head", not to mention that it will affect harmony.
I am Youyu Happy, I will continue to share what I see, hear, and feel about fishing in the future, and look forward to the attention and support of fishing friends, see you in the next issue!
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