What Is a Fish?: What Are Fish?

The video tutorial explores the habitats and characteristics of fish, emphasizing their adaptations for living in water. It highlights the importance of a backbone, the concept of being cold-blooded, and various physical adaptations like scales and fins that aid in swimming. The tutorial also delves into the fascinating ability of fish to breathe underwater through gills, which extract oxygen from water, a crucial survival trait.

What new insight or understanding did you gain from this video?