Date : 9/25/2017 9:12:44 PM From : "MSN.com - Hotmail, Outlook, Skype, Bing, Latest News, Photos & Videos" Subject : Scientists terrified guppies to prove that fish have personalities
The heron was fake — a lawn ornament dubbed “Grim” — but the guppies knew only the terror of its beak, again and again and
again.