Fish introduced to a mirror began to act strangely, swimming upside-down or spreading their fins. They also tried to scrape a mark from their throats. Reading time 5 minutes New research seems to ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. A little fish just passed a classic scientific test of self-awareness by recognizing itself in a mirror, scientists have ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. For decades, self-awareness has been guarded as a very ...