Have you seen the logo above, on the Ministry with Lesbian and Gay Catholics page (click on this post's title) of the website of the Archdiocese of Los Angeles?
Part of the text on the page says:
"Early Christians recognized each other by the sign of the fish"
"See in the fish pin a sign of recognition of our lesbian and gay sisters and brothers. The pin signals solidarity with all people of faith who promote justice and inclusivity for every person in their faith communities.
"In 2006 we celebrated our 20th anniversary of this ministry. The Ministry with Lesbian and Gay Catholics was founded by Cardinal Roger Mahony on February 4, 1986 and is supported throughout the Archdiocese at parish level an active outreach ministry with gay and lesbian Catholics, their parents, families and friends.
"The Ministry With Lesbian and Gay Catholics (MLGC) recognizes that all persons with a homosexual orientation are capable of living a full Catholic life in union with all the members of the Church..."
Comment: For some reason, the page does not explain the fish symbol and its origin. Ever since the early Church, Catholics (and, later, Protestants) have used the fish as a symbol for Jesus, because in Greek, the word for fish, icthys, is an acronym for: Jesus Christ, Son of God, Savior.
Ole Q believes that appropriating or taking over any symbol for Jesus is, um, not a good idea.