Types of Fish: How Many Are There in the World? Explore Fish Diversity and Species
More than 34,000 types of fish exist worldwide. They fall into three main categories: jawless fishes, cartilaginous fishes, and bony fishes. Some estimates suggest the total could reach 35,500 species. Fish live in both fresh and saltwater. Many species are still not classified or described. Within these categories, species exhibit unique adaptations. For example, the … Read more



