Exploring the Fascinating World of Fish: Anatomy, Adaptations, and Environments

The video explores the fascinating world of fish, detailing their classification into three main classes based on anatomy: jawless, cartilaginous, and bony fish. It discusses their habitats, highlighting the differences between saltwater and freshwater fish, and how their kidneys adapt to these environments. The video also covers fish reproduction, gender characteristics, and the unique respiratory system of fish, focusing on gills and their function. It emphasizes the diversity and adaptability of fish species, including anadromous fish like salmon.

Describe the structure and function of gills in fish.

What is the significance of branchial arches in fish respiration?

What adaptations allow some fish to breathe air?