1. Skip to content
  2. Skip to main menu
  3. Skip to more DW sites

Heat wave kills off fish

Dietrich Karl Mäurer/Sonya DiehnAugust 9, 2018

Large numbers of fish have died in the Rhine River as a result of high water temperatures due to the ongoing heat wave. The cold-loving grayling in northern Switzerland has been hit particularly hard. During the 2003 heat wave, 90 percent of Switzerland's grayling population was wiped out. Now, there are fears the current bout of searing heat will deliver another blow.