A finger-length fish has reignited a long-running debate about self-awareness, cognition and how much we’ve underestimated ...

A tiny fossil fish from Alberta is forcing scientists to rethink a story that has sat quietly in textbooks for decades. It is ...

To get to the bottom of it, they looked at the fish’s anatomy and physiology and discovered something curious in their gills.

When Ted Judah goes scuba diving off the coast in Monterey Bay, he normally swims at the surface to the area above the dive ...

Learn about 12 top protein-rich fish for a healthier diet. From tuna to sea bass, discover nutrient benefits and safe choices ...

Omega-3s may reduce the risk of high blood pressure, but fish oil may be more effective in people with high blood pressure or high triglycerides. Learn why.

Recycled Christmas trees are particularly important during dry seasons, like this winter, when water levels are low.