办事指南

澳门金沙开户注册官网:A species of fish has passed the mirror test for the first time

点击量:   时间:2019-03-04 05:04:01

Helmut Corneli/ALAMY By Yvaine Ye THE cleaner wrasse has become the first fish to pass the mirror test – a classic experiment used to gauge self-awareness in animals. Until now, only relatively intelligent animals – such as apes and elephants – have passed the test, which shows whether an individual can recognise itself. To see if fish may also be self-aware, Masanori Kohda at Osaka City University, Japan, and his colleagues put 10 wild cleaner wrasses in individual tanks with a mirror. During the first few days,