Cleaner wrasse with giant moray eel client
A central dogma of creationism—indeed one reason why it persists and is clung to in the face of contrary evidence, massaging the egos of creationists—is the claim that humans were uniquely created, separate from and superior to other animals. Until the middle of the 20th century, humans were believed to possess unique abilities to make and use tools, to learn and design, and above all to be self-aware—qualities that religious people believed placed us next to God in possessing these abilities because we had been created in its image.
Since then, one formerly unique human ability after another has been shown to be possessed by other animals, mainly, but not exclusively, mammals and birds. Many species are now known to use tools and some are even known to make them. And many have been shown to be self-aware, using the 'mirror test' in which an animal can identify the image in the mirror as itself—see the information in the side panel for many examples of other animals with these formerly 'unique' human abilities.
Now a team of researchers, led by Dr. Shumpei Sogawa and Professor Masanori Kohda of Osaka Metropolitan University, Osaka, Japan, have shown that a fish, the cleaner wrasse, shows evidence of self-awareness according to the mirror test. These small fish specialise in removing parasites from the bodies of larger fish, even entering the mouths of predators to remove food particles and parasites from between the teeth and on the gills of their 'clients'. The Osaka-led team recently published their findings, open access, in the journal Scientific Reports.
