It turns out that because, according to Christian teaching, Jesus died on a Friday, fasting on Fridays became a way to honor his sacrifice. Fish, though, which are cold blooded were. In , the Catholic Bishops' Conference of England and Wales, issued a rule that re-established “the practice of Friday penance in the lives. But fish — well, they'd been associated with sacred holidays even in pre-Christian times. And as the number of meatless days piled up on the. The Friday Fast is a Christian practice of abstaining from meat, lacticinia as well as alcohol, on Fridays, or holding a fast on Fridays, that is found most. The Lent tradition is to abstain from meat, not necessarily to eat fish. Eating vegetables suffices. Christians have fasted (gone without food). Catholics are required to abstain from eating meat on Ash Wednesday and each Friday in Lent (including Good Friday). Fish is often used as a. Catholics abstain from flesh meat on Ash Wednesday, Good Friday, and the Fridays of Lent. Fish do not belong to the flesh meat category. There Was No Requirement That People Eat Fish. It is important to note that the Church's directive called for abstaining from eating meat. By medieval times, Christians in Europe had a full calendar of fasting or meatless days: not just Friday but also Wednesday and Saturday, plus. Those who grew up observing traditions of the Catholic Church will know all about the meat guilt on Good Friday.