some lines on fish for class4
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- A fish is considered as an aquatic animal. It only lives underwater.
- There are almost 20,000 species of fish. It also includes the groups of jawless fish, sharks, bony fish, and many more with different shapes, sizes, and colors.
- The lifespan of fish is 20 years. Catfish has the most extended lifespan of 60 years and weighs up to 170 kilos.
- Fishes form a large number of groups and reproduce by releasing large quantities of sperm and eggs into the water. Also, it would make sure the fertilization of eggs.
- Fish prefer to be in groups, known as a shoal. A shoal can contain millions of fish.
- A fish can lay thousands of eggs. However, a few fish would reach maturity level.
- The process in which a group of fish is swimming in the same direction is called schooling.
- Fishes use a different variety of noises for communication. They make shallow pitch sounds and use body parts like bladder and muscle vibration.
- Fishes are mostly carnivorous. They eat insects and other small fishes. Only a few species of fish are herbivorous, and they eat weeds and sea plants.
- Fishes play an essential role in various cultures. They have symbolic meanings in different regions.
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