What Is a Fish?: Video Review

The video tutorial explores what defines a fish, examining their physical traits and habitats in both freshwater and saltwater. It further delves into the classification of fish into jawless, cartilaginous, and bony groups, concluding with a summary of the investigation.

What is one of the defining physical characteristics of fish?

• They have feathers.

• They have scales.

• They have fur.

• They have wings.

In which type of water do fish live?

• Only in brackish water.

• In both freshwater and saltwater.

• Only in saltwater.

• Only in freshwater.

Which of the following is a group of fish?

• Mammals

• Reptiles

• Jawless fish

• Amphibians

What type of fish has a skeleton made of cartilage?

• Jawless fish

• Bony fish

• Cartilaginous fish

• Invertebrates

Which group of fish is known for having a bony skeleton?

• Cartilaginous fish

• Mollusks

• Bony fish

• Jawless fish