Animales complejos: peces

The video explores the evolution and diversity of fish, highlighting that they were the first vertebrates on Earth. It explains how fish breathe through gills, which extract oxygen from water. Fish are ectothermic, meaning their body temperature varies with the environment. The video also covers fish locomotion, detailing the role of fins, and describes their sensory capabilities. Finally, it discusses the diversity among fish, including sharks with cartilage skeletons and other fish with bony skeletons.

What evidence suggests that fish were the first vertebrates on Earth?

How do fish breathe and what are the organs involved?

What does it mean for fish to be ectothermic?

What types of fins do fish have and how do they help in movement?

Can you name different types of fish and their unique characteristics?