
The ichthys or ichthus (
), from the
Greek (,
1st cent. AD Koinē Greek pronunciation: , "
fish
A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can ...
") is, in its modern rendition, a
symbol
A symbol is a mark, Sign (semiotics), sign, or word that indicates, signifies, or is understood as representing an idea, physical object, object, or wikt:relationship, relationship. Symbols allow people to go beyond what is known or seen by cr ...
consisting of two intersecting arcs, the ends of the right side extending beyond the meeting point so as to resemble the profile of a fish. It has been speculated that the symbol was adopted by
early Christians as a secret symbol; a
shibboleth to determine if another was indeed Christian.
[Robert Mowat, “ΙΧΘΥΣ,” in
Atti del II° congresso internazionale di archeologica cristi-ana tenuto in Roma nell’ aprile 1900
(Rome: Spithöver, 1902), 1–8][Rasimus, T. ,2011]
''Revisiting the Ichthys: A Suggestion Concerning the Origins of Christological Fish Symbolism''
Pp 327-348 in '' Mystery and Secrecy in the Nag Hammadi Collection and Other Ancient Literature: Ideas and Practices.'' Biblical Studies, Ancient Near East and Early Christianity E-Books Online. "Such solutions, once popular, include the fish as a secret symbol for persecuted Christians or as a symbol for Christ mystically sacrificed in the Eucharist." It is now known colloquially as the "Jesus fish". This symbol is widely used by
Christians
A Christian () is a person who follows or adheres to Christianity, a monotheistic Abrahamic religion based on the life and teachings of Jesus Christ. Christians form the largest religious community in the world. The words '' Christ'' and ''C ...
as a sign of their
Christian faith, often being found on vehicles, necklaces and laptop stickers.
Origin

The first appearances of the ichthys in
Christian art and literature dates to the 2nd century. The symbol's use among Christians had become popular by the late 2nd century, and its use spread widely in the 3rd and 4th centuries.
In
early Christian history, the ichthys symbol held "the most sacred significance." It has been claimed that Christians used it to recognize churches and other believers during a time when they faced
persecution in the Roman Empire.
Augustine, a
Church Father, stated that a fish symbolized
Jesus
Jesus (AD 30 or 33), also referred to as Jesus Christ, Jesus of Nazareth, and many Names and titles of Jesus in the New Testament, other names and titles, was a 1st-century Jewish preacher and religious leader. He is the Jesus in Chris ...
well, writing that “he was able to live . . . without sin in the abyss of this mortality as in the depth of waters.”
Additionally, the ichthys symbol references the dominical sacraments of
Baptism
Baptism (from ) is a Christians, Christian sacrament of initiation almost invariably with the use of water. It may be performed by aspersion, sprinkling or affusion, pouring water on the head, or by immersion baptism, immersing in water eit ...
and
Communion.
With respect to baptism,
Tertullian
Tertullian (; ; 155 – 220 AD) was a prolific Early Christianity, early Christian author from Roman Carthage, Carthage in the Africa (Roman province), Roman province of Africa. He was the first Christian author to produce an extensive co ...
, an early Church Father, "taught that just as water sustains fish, 'We, little fishes, after the image of our Ichthys, Jesus Christ, are born in the water'."
For the "Holy Eucharist, with which the
miracle of the multiplication of the loaves and fishes had such intimate connection both in point of time and significance."
Depicted in the
Catacombs of Saint Sebastian and of the
Catacomb of Priscilla, the symbol is also mentioned in the Latin text titled ''
Oracula Sibillina'' which dates back to the 1st-2nd century.
Symbolic meaning

(), or also with a
lunate sigma
Sigma ( ; uppercase Σ, lowercase σ, lowercase in word-final position ς; ) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. In general mathematics, uppercase Σ is used as an operator ...
, is an
acronym
An acronym is a type of abbreviation consisting of a phrase whose only pronounced elements are the initial letters or initial sounds of words inside that phrase. Acronyms are often spelled with the initial Letter (alphabet), letter of each wor ...
or
acrostic for "Ἰησοῦς Χρῑστός Θεοῦ Υἱός Σωτήρ", ;
contemporary Koine, which translates into English as 'Jesus Christ, God's Son, Savior'.
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Iota (i), ''
Iēsoûs'' (), "
Jesus
Jesus (AD 30 or 33), also referred to as Jesus Christ, Jesus of Nazareth, and many Names and titles of Jesus in the New Testament, other names and titles, was a 1st-century Jewish preacher and religious leader. He is the Jesus in Chris ...
"
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Chi (ch), ''
Khrīstós'' (), "
anointed"
*
Theta
Theta (, ) uppercase Θ or ; lowercase θ or ; ''thē̂ta'' ; Modern: ''thī́ta'' ) is the eighth letter of the Greek alphabet, derived from the Phoenician letter Teth 𐤈. In the system of Greek numerals, it has a value of 9.
Gree ...
(th), (), "of God", the
genitive singular of , ''Theós'', "God"
*
Ypsilon (y or u), (), "Son"
*
Sigma
Sigma ( ; uppercase Σ, lowercase σ, lowercase in word-final position ς; ) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. In general mathematics, uppercase Σ is used as an operator ...
(s), (), "Savior"
Augustine quotes an ancient text from the
Sibylline oracles
The ''Sibylline Oracles'' (; sometimes called the pseudo-Sibylline Oracles) are a collection of oracular utterances written in Greek hexameters ascribed to the Sibyls, prophetesses who uttered divine revelations in a frenzied state. Fourteen b ...
whose verses are an
acrostic of the generating sentence.
A fourth century adaptation of ''ichthys'' superimposes the Greek letters on top of each other to render a shape akin to an eight-spoked wheel. Though this shape has often been interpreted as such, it has also been proposed that the round symbol represents a loaf of bread.
In the Gospels
Fish are mentioned and given symbolic meaning several times in the Gospels. Several of
Jesus
Jesus (AD 30 or 33), also referred to as Jesus Christ, Jesus of Nazareth, and many Names and titles of Jesus in the New Testament, other names and titles, was a 1st-century Jewish preacher and religious leader. He is the Jesus in Chris ...
' 12
Apostles were fishermen. He commissions them with the words "
I will make you fishers of men". (Mark 1: 16–18)
Having been
resurrected, Jesus was given grilled fish in
Luke 24:41–43.
At the
feeding of the five thousand, a boy is brought to Jesus with "five small loaves and two fish". The question is asked, "But what are they, among so many?" Jesus multiplies the loaves and fish to feed the multitude.
In
Matthew 13:47–50, the
Parable of Drawing in the Net, Jesus compares the angels separating the righteous from the wicked at the end of this world to fishers sorting out their catch, keeping the good fish and throwing the bad fish away.
In
John 21:11, it is related that the disciples fished all night but caught nothing. Jesus instructed them to cast the nets on the other side of the boat, and
they drew in 153 fish. When they return to shore with their catch, Jesus is waiting for them and has cooked some fish for them to eat.
In
Matthew 17:24–27, upon being asked if his Teacher pays the temple (or two-drachma) tax, Simon Peter answers yes. Christ tells Peter to go to the water and cast a line, saying that a coin sufficient for both of them will be found in the fish's mouth. Peter does this and finds the coin.
The fish is also used by Jesus to describe "the Sign of Jonah". (
Matthew 12:38–45) This is symbolic of Jesus's resurrection, upon which the entire Christian faith is based. (
1 Corinthians 15:1–58)
Early church
According to tradition, ancient Christians, during their persecution by the Roman Empire in the first few centuries after Christ, used the fish symbol to mark meeting places and tombs, or to distinguish friends from foes:
There are several other hypotheses as to why the fish was chosen. Some sources indicate that the earliest literary references came from the recommendation of
Clement of Alexandria
Titus Flavius Clemens, also known as Clement of Alexandria (; – ), was a Christian theology, Christian theologian and philosopher who taught at the Catechetical School of Alexandria. Among his pupils were Origen and Alexander of Jerusalem. A ...
to his readers (Paedagogus, III, xi) to engrave their seals with the dove or fish. However, it can be inferred from Roman monumental sources such as the Cappella Greca and the Sacrament Chapels of the catacomb of
St. Callistus that the fish symbol was known to Christians much earlier.
In popular culture

In the 1970s the "Jesus Fish" rose in popularity as an icon of
Christianity
Christianity is an Abrahamic monotheistic religion, which states that Jesus in Christianity, Jesus is the Son of God (Christianity), Son of God and Resurrection of Jesus, rose from the dead after his Crucifixion of Jesus, crucifixion, whose ...
by believers. In 1973 the symbol and message was taken to the
Aquarius Rock Festival in
Nimbin,
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
. Today, it can be seen as a
decal or emblem on the rear of automobiles or as pendants or necklaces as a sign that the owner is a Christian. These are commonly given away or sold at Christian
religious goods stores. Versions of this include an Ichthys with "Jesus" or "ΙΧΘΥΣ" in the centre, or simply the Ichthys outline by itself.
According to one writer, while many Christians hang a
cross necklace or
rosary inside their vehicles, "the fish sticker on the car is a more conscious symbol of a
witnessing Christian—significantly, unlike the former, it is on the outside of the car for everyone to see."
The
Ichthus Music Festival is an annual large outdoor
Christian music festival held in mid-June in
Wilmore, Kentucky. It is the oldest Christian music festival in the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
, starting in 1970.
See, Robison, Greg, ''Christian Rock Festivals''
(New York: The Rosen Publishing Co., 2009), p.7
As a secret symbol
The idea that the Ichthys was used as a secret symbol is based on an argument from silence brought forward by Robert Mowat. Both the Licinia Amia Epitaph and the Abercius inscription show the Ichthys without mention of Jesus Christ, while featuring clear attestations to Christian beliefs and themes. From this Mowat speculates, they were purposely avoiding outing themselves as Christians. As none of the early Christian sources link the Ichthys to Christian persecution, this connection has now mostly fallen out of favor (Rasimus compiles a list of early Christian references to the Ichthys, none of which point towards the persecution hypothesis and instead link it to baptism
Baptism (from ) is a Christians, Christian sacrament of initiation almost invariably with the use of water. It may be performed by aspersion, sprinkling or affusion, pouring water on the head, or by immersion baptism, immersing in water eit ...
, the Eucharist
The Eucharist ( ; from , ), also called Holy Communion, the Blessed Sacrament or the Lord's Supper, is a Christianity, Christian Rite (Christianity), rite, considered a sacrament in most churches and an Ordinance (Christianity), ordinance in ...
, and the story of the feeding of the multitude). The idea is prominently featured and likely popularized by the 1951 movie '' Quo Vadis''.
See also
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References
External links
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Principal Christian Symbols: The Fish (Ichthus), Cross & Crucifix
Extensive explanations on several popular Christian symbols, including the ichthys
- Catholic Encyclopedia article
{{Christian crosses
Acronyms
Christian symbols
Early Christian inscriptions
Roman-era Greek inscriptions
Christian terminology
Pictograms
Language and mysticism
Early Christian art
Fish in Christianity