Sushi fish are partying hard these days. Japan’s population is ageing fast and shrinking.

In 2005, Japan’s population began to fall because of its low birth rate, despite increasing life expectancy. Unlike France where retirement homes don’t have AC on purpose, air-conditioned cronies just won’t die in Japan.

At some point they do pop off and it is estimated that Japan’s population will drop from 128m in 2005 to 95m in 2050. It is unprecedented for any nation in peacetime to shrink and age so rapidly, reports The Economist.

That’s what happens when you screw Tamagotchis.