Their brains are highly specialised to recognise other fish’s bodies, and locate and remove remove parasites from them.
Haven’t read the original wrasse paper, but my understanding is that what made it a “pass” was that when presented with the mirror, the wrasses would clean their own bodies, rather than attempting to clean the wrasse in the mirror.
Overall, that finding pushed me in the direction this post argues; i.e. that it’s decent Bayes evidence in favor of self-awareness, but far from a slam-dunk.
Haven’t read the original wrasse paper, but my understanding is that what made it a “pass” was that when presented with the mirror, the wrasses would clean their own bodies, rather than attempting to clean the wrasse in the mirror.
Overall, that finding pushed me in the direction this post argues; i.e. that it’s decent Bayes evidence in favor of self-awareness, but far from a slam-dunk.