Fish may be self-aware, scientists have said, after the first species passed the well-known ‘mirror test’ which demonstrates self-recognition.
Only a few animals such as humans, apes, dolphins and some birds can recognise themselves in a mirror, and will attempt to remove marks on their skin, after noticing them in the reflection.
The ability suggests a level of higher intelligence and awareness which is not shown by children until around 18 months.
Until now no fish has demonstrated the ability. But experiments by the Max Planck Institute for Ornithology (MPIO), show the cleaner wrasse will scrape up against hard surfaces to remove marks placed on its body by researchers, after viewing itself…