Containing around 17,000 different species, jawed fish are the largest group of vertebrates in the animal kingdom. But even that huge number doesn't account for all fish species in fresh water and saltwater. Because there are so many types of fish, many fascinating differences exist between species -- not to mention the fact that they can somehow breathe underwater.
Question 1 of 10
What feature sets fish apart from other water-dwelling animals?
Question 2 of 10
What's the proper term for the study of fish?
Question 3 of 10
Which of the following is true about fish scales?
Question 4 of 10
Which part of a fish's body does not help enhance its hearing?
Question 5 of 10
What is the largest fish?
Question 6 of 10
What is the fastest fish in the ocean?
Question 7 of 10
Which fish has the longest migration route?
Question 8 of 10
What's the main difference between the shark's class of fish and other fish classes?
Question 9 of 10
What type of "fish" was a recent household fad in the United States?
Question 10 of 10