IT'S ALMOST AUTOMATIC--IF you notice a smudge when you look in the mirror, you wipe it off. Seems simple, but only a few particularly clever species such as orangutans and dolphins share this ability with humans. Even people don't recognize themselves in the mirror until early childhood.
But now, incredibly, new research suggests that the cleaner wrasse--a tiny, tropical reef fish--can recognize itself too, the first fish to do so.
Read the full story, here: https://www.nationalgeographic.com/a...lligence-news/