What Is a Fish?: Different Types of Fishes

The video tutorial explains the diversity of fish, highlighting over 30,000 species. It categorizes fish into groups based on characteristics: jawless fishes like lampreys, cartilaginous fishes such as sharks, and bony fishes. Jawless fishes have suction cup-like mouths, while cartilaginous fishes have skeletons made of cartilage. Bony fishes, the most diverse group, have skeletons made of bone and inhabit both freshwater and saltwater environments.

What type of fish is described as having a suction cup for a mouth?

How many different kinds of bony fishes are there according to the text?

• Over 10,000

• Over 20,000

• Over 30,000

• Over 40,000