Fish Facts: Lesson for Kids

An error occurred trying to load this video.

Try refreshing the page, or contact customer support.

Coming up next: Flamingo Facts: Lesson for Kids

You're on a roll. Keep up the good work!

Take Quiz Watch Next Lesson
Your next lesson will play in 10 seconds
  • 0:04 Fish Features
  • 1:05 Where Do Fish Live?
  • 1:42 What Do Fish Eat?
  • 2:36 Lesson Summary
Save Save Save

Want to watch this again later?

Log in or sign up to add this lesson to a Custom Course.

Log in or Sign up

Speed Speed

Recommended Lessons and Courses for You

Lesson Transcript
Instructor: Lauren Scott

Lauren has a Master's degree in special education and has taught for more than 10 years.

You may have seen them in the ocean, in an aquarium...or on your dinner plate! Fish are important and fascinating animals. This lesson teaches the basics of what makes a fish, a fish.

Fish Features

Fish are different sizes, shapes, and colors, but they all have some things in common. All fish are vertebrates, meaning they have backbones (though not all backbones are made of bone; we'll get to that in a minute.) They all have skeletons that give them their shape and protect their internal organs. Many fish, like goldfish and tuna, have bony skeletons. Others have skeletons made of cartilage, which is the flexible stuff that makes up the tip of your nose.

Fish need gills to breathe in the water. Gills are slits on each side of the head that take oxygen from the water, where it then travels into the fish's blood. A few kinds of fish, called lungfish, can breathe air at the surface.

Fish have fins that help them balance and swim. Most fish have strong tail fins that push them through the water, but you may also see fins on their backs, sides, and bellies. Some fish have special fins that let them walk short distances on land.

Most fish are covered in tough scales that help protect their skin. Sharks have special scales that look and feel like tiny teeth.

Where Do Fish Live?

All fish live in water, but their homes are still very different. Some live in freshwater habitats, like lakes and rivers, while others live in the salty ocean. Fish that live in bays get a mix of freshwater and saltwater. You can find fish in deep, cold water, but also in warmer and shallower water.

Fish don't always stay in the same place. They might migrate, meaning they travel long distances to find food or mates. Some fish, like salmon, even move back and forth between freshwater and saltwater.

Fish may live alone, or in groups of fish, called schools. Some schools have hundreds of fish.

To unlock this lesson you must be a Member.
Create your account

Register to view this lesson

Are you a student or a teacher?

Unlock Your Education

See for yourself why 30 million people use

Become a member and start learning now.
Become a Member  Back
What teachers are saying about
Try it risk-free for 30 days

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Create an account to start this course today
Try it risk-free for 30 days!
Create an account