Species numbers alone do not fully capture how ecosystems are changing. In a global study, scientists analyzed long-term data ...

Setting up an aquarium requires more than just buying a tank and filling it with water. You must also determine tank size, water temperature, and, of course, the fish that will call the tank home. To ...

By Will Dunham WASHINGTON, Feb 18 (Reuters) - For more than a century, biology textbooks have stated that vision among vertebrates - people included - is built from two clearly defined cell types: ...

Add Yahoo as a preferred source to see more of our stories on Google. array of white fish on blue plank background - Lauripatterson/Getty Images We may receive a commission on purchases made from ...

Add Yahoo as a preferred source to see more of our stories on Google. Salmon gets the stamp of approval from dietitians. But what other types of fish should you be eating? (Getty Creative) (Catherine ...

A 400-million-year-old jawed fish fossil found in the Arctic, Romundina gagnieri, could be a key link in the evolution of vertebrate teeth.