Scientists have traced the evolutionary origin of humans' outer ears to the gills of ancient fish through a series of gene-editing experiments. When you purchase through links on our site ...

It turns out the human ear got off to a fishy start. Literally. A fascinating new study reveals that the mammalian outer ear has its evolutionary roots in the gills of ancient fish. This ...

The researchers observed that gene activity in the human outer ear cartilage was similar to that in the elastic cartilage in the fish gills. But many genes are active in unrelated organs.

A Brazilian woman was horrified when she found a fish with human-like teeth in its mouth while cleaning it for dinner. The video of the fish's teeth went viral with over 5.3 million views.

That means that fish have a much harder time breathing than humans do. They drink water in their mouths just as we drink air, opening and closing our lips. This water then seeps through the gills ...

What is a betta fish? Betta fish—also known as ... which is attached to the gills and functions similarly to a human lung. Although the species is renowned for its stunning appearance, wild ...