Making up about 22 percent of the United States population, there are about 1.1 billion Catholics in the country, and fast-food chains are capitalizing on the fact that many in the religion abstain from eating meat on Fridays between the start of Lent and Easter.
Last week, leaders with Krystal announced two new fish products, and McDonald's has also recently added a new fish product—fish bites.
Back Yard Burgers leaders have also announced a fish sandwich, noting in a news release that it is here just in time for the Lenten season.
"We are so pleased to offer our guests the first fish sandwich in our 25-year history," Back Yard Burgers Chief Marketing Officer Monte Jump said in the news release. "We believe that we are offering our guests the best fish sandwich in the marketplace."
Click here for more information about Lent.