Fish's sense of smell and taste
Studies have shown that fish have an unusually sensitive sense of smell and taste, far exceeding that of humans. It turns out that fish have two pairs of Yi holes, which do not pass through the mouth. The fish lives in the water. Water flows in from the front nostrils and discharges from the back nostrils. The different odors in the water can be smelled as soon as it enters and the other exits.
The fish’s lips, mouth and tentacles are full of taste buds. There are also taste nerves in other parts. Taste buds and nose are jointly responsible for the qualitative analysis of chemical substances in water bodies. Therefore, when the fish eat, most of them have to go through repeated vomiting and vomiting. The edibility of the food is distinguished by the taste, and the edible ones are eaten, and the ones that are not suitable for the taste are spit out. Biologists concluded from the experiment: fish can distinguish sweet taste 80 times more than humans.
Fish find bait in the water, relying on sight and smell at close range, and smell at long range. In other words, the smell of food has actually become a guide for fish to find food, just as cats will follow the smell to find food when they smell the fishy smell. This is not only a conditioned reflex, but also an ethnic inheritance. This shows how important it is to carefully study the smell and taste of bait in actual fishing.
In addition, the whiskers of fish heads are covered with tactile nerves, which are detectors for fish to forage and defend against enemies.
Fish side feel
Although fish are nearsighted, they can swim freely in rivers and lakes without hitting walls. What's the secret? It turns out that fish have their own "secret weapons" one by one. Various types of fish have black lateral lines on the scales of their bodies, which lead directly to the brain nerves. Most fish have only 1 lateral line, some have 2 (such as carp), bream has 3, and bass has 4. The more lateral lines, the more alert and sensitive the fish.
Scientists know through experiments that the fish’s lateral line is like a thunderbolt, which can accurately determine the location of the shaking object and feel the water flow. Fish that live in the water all year round use their own lateral lines to swim, inhabit, prey, and defend against enemies, as well as to keep in touch with their companions, and react immediately when they become "enemy". When the surrounding environment changes, such as the heat and cold of the atmosphere, the height of the air pressure, the rise and fall of water, the speed of the flow rate, and the appearance of abnormal noises, etc., the fish’s sensation immediately produces reflex behavior, making it active and feeding. Different changes have taken place.
To figure this out is essential for guiding fishing. Not only can it help us to solve the mystery of fish suddenly not eating hooks, but more importantly, it reminds us how to use fish's lateral sense of touch (including smell and vision) to improve the effect of attracting fish and the rate of hooking, such as the dynamic simulation of fishing bait, etc.
