Evolution of Fish
The Evolution of Fish refers to the process by which fish species have developed and changed over time through genetic variation, natural selection, and adaptation to their environments. This includes the transition of fish from early jawless forms to more advanced jawed species, as well as the diversification of fish into a wide range of shapes, sizes, and ecological niches. The study of fish evolution also examines the impact of major events such as mass extinctions and climate changes on the evolution of fish species.