殃及池鱼 (殃及池魚) yāng jí chí yú

yāng jí chí yú set phrase disaster falls on fish in a pond; misfortune catches innocent people
Domain: Idiom 成语
Notes: As the pond dries the fish will die, so the innocent people will be caught in a misfortune (Guoyu '殃及池魚')

Also contained in

城门失火,殃及池鱼