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![]() edHelper.com Animal Themes Fish Oceans |
Basics of Fish |
| edHelper's suggested reading level: | grades 4 to 6 | |
| Flesch-Kincaid grade level: | 5.95 |
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| Basics of Fish |
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1 Fish are residents of the water. They can be found in almost any type of underwater environment. Mistakenly, many people think all underwater animals are fish. That is not true! Whales, jellyfish, and starfish, for example, are not fish. So, what exactly is a fish? Fish have gills that they use to breathe air. They have a streamlined body and fins suitable for swimming. They are vertebrates - animals with a backbone. Lastly, most of them have scales for protection. Sharks, salmons, stingrays, and sailfish are all examples of fish. Then, why are whales, jellyfish, and starfish not in the fish family? Whales are not fish, because they are mammals - mother whales produce milk to feed their baby. Jellyfish and starfish are not fish, because they do not have a backbone.