A number of fast food places do limited time fish sandwiches. Often times around Lent. Sometimes just because fish was cheap. Der Weinerschnitzel (an American hot dog-centric joint that notably does not offer anything close to schnitzel), Wendy’s, and Jack in the Box have all had them at one time or another.
In Los Angeles, local McDonald’s franchises would offer discount Filet-o-Fish during Lent.
