Why study fish? What are the implications of living in water? Fishes were the first creatures with brains and bony jaws. Because of their incredible diversity (fishes make up half of all vertebrate species alive today, and live everywhere from mountain streams to ocean depths), it is easier to determine what\u27s not a fish. Explore this paradox by demonstrating how ichthyologists pursue evidence through the study of evolution, diversity, ecosystems, and biogeography. Offered in partnership with the American Museum of Natural History. Accelerated online course. Please register 2 weeks prior to course start date to ensure receipt of course materials. Target audience: educators 6-adult. Note: Courses offered through AMNH use the e-college ...