What are the basics of fish physiology?
fish are largely different from other animals adaptation to their environment, which of course is water. Fish physiology differs in some key ways from animal physiology that inhabit the soil. The main differences are how fish breathe or obtain oxygen and move water. Fish also made other remarkable physiological adjustments of their environment.
Like animals on the ground, fish need oxygen to survive. The problem is that water has only two percent of the amount of oxygen contained in the air. In addition, the oxygen level decreases as soon as the water is warmer and soiled or stagnant water also has less oxygen.
Fish get oxygen mainly through their gills. By opening and closing the mouth, the fish move on the frogs that are full of thousands of small blood vessels that absorb oxygen and send it to the bloodstream. Several fish can have oxygen in other ways. For example, a tape - a large salty vodarybu, you can swim to the surface and take it if necessaryA little extra oxygen. Lungfish has gills, but he gets a lot of his oxygen by swallowing the air, which fills a bag that is somewhat like a lung, his name.
How fish moves with water also a very remarkable element of fish physiology. Because the water is a thick fish, it must be very strong to move it. Fish have a lot of muscles that allow them to swim. The first allow fish to move back and forth, and their thick tails help them move them with water. Most fish have seven fins, but some have six or eight.
swimming bladder or air bladder is another important element of fish physiology. The fish remain hovering and move up and down in water by reducing or increasing the amount of air in their swimming bladder. Some fish also use a swimming bladder to strengthen the sound.
Physiology of fish as the environmental environmental environmentalin the ways of ways. Most fish have protective coverage of calcium -made scale, which protects fish and illness. Another important adaptation is related to the stay of hydrated and maintaining the proper balance of salt, which is a special challenge for salt water fish. Too much salt is not good, so the fish of salt water drink water and secrete with urine and gills. Freshwater fish take water through gills and skin rather than drink it.