A small tropical fish may possess a sophisticated type of self-awareness only ever seen in humans, scientists have said. Researchers have discovered that the bluestreak cleaner wrasse – which ...

such as the bluestreak cleaner wrasse (Labroides dimidiatus), to act as vectors for parasites. A study demonstrated that while these cleaners can resist some parasites, they can also temporarily ...

For the experiment, the team used bluestreak cleaner wrasse, a species measuring more than 10 centimeters long that inhabits waters off Wakayama Prefecture and the southwestern Nansei Islands.

The researchers documented the behavior of the cleaner wrasse (Labroides dimidiatus), a coral reef species famous for its symbiotic grooming—it eats parasites residing on other fish—in front of its ...