Most fish have what covering their bodies

Fish breathe using

The structure labeled #5 is the

The structure labeled #9 is called the

To rise in the water, a bony fish fills its swim bladder with gas from

The lateral line system enables a fish to

Most fishes have a _______________ that helps them move up and down in the water or remain at a given depth.

Sharks have a swim bladder

Most fishes have all of the following EXCEPT _____.

Which of the following is NOT a function of a fish’s lateral line?

Fishes in the class Osteichthyes are classified because they have _____ skeletons.

Fishes in the class Chondrichthyes are classified because they have _____ skeletons.

In most fishes the dorsal side is darker than the ventral side. This adaptation is called _____.

When speaking of a bunch of one species of fish, we use the term _____; whereas, when speaking of a number of different species together, we use the term _____.

Which of the following is NOT a major group of fishes.