About Fish

About Fish

About Fish

All fish share two traits: they stay in the water and they have a backbone—they are vertebrates.

Apart from these similarities, however, many of the species in this team fluctuate markedly from one another. Finfish like salmon have gills, are blanketed in scales, and reproduce via laying eggs. Eels, by using contrast, have worm-like bodies and notably slimy skin. Lungfish gulp air. Whale sharks, the biggest fish, provide delivery to stay younger and devour solely tiny fish, squid, and plankton. Some species, such as the weedy sea dragon, are so weird they appear nearly unreal.

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About Fish

Fish have developed one of a kind senses, too. Because water transmits sounds, disperses chemicals, and conducts electrical energy higher than air, fish depend much less on their imaginative and prescient and greater on their hearing, taste, and smell. Many can become aware of movement in the water the usage of a specific row of scales with sensors recognized as the lateral line. Others can locate their prey and even navigate via detecting electrical charges.

About Fish

One purpose fish are so numerous is that 70 percent of the planet is blanketed in water. The animals in this crew stay in a range of habitats ranging from coral reefs and kelp forests to rivers, streams, and the open ocean. Another is that fish are very ancient on the evolutionary scale. According to fossil records, they have been on Earth for greater than five hundred million years! The whole variety of dwelling fish species—about 32,000— is larger than the complete of all different vertebrate species (amphibians, reptiles, birds, and mammals) combined. 


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