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Sirenix is the second transformation of Season 5. It is parallel to Harmonix.


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Daphne using her cursed Sirenix.

In Season 5, Faragonda informs the Winx will need Sirenia to defeat Tritannus as their Believix power is less effective underwater. According to Faragonda in "Return to Alfea", Sirenix is an ancient power that was born of the magic of the oceanl Faragonda also mentioned that no one had acquired Sirenix for a long time and that Daphne was the last fairy to acquie it, and the only one who knows the location of the Sirenix Book, a book needed to acquire Sirenix.

When Bloom asked Daphne about the location of the Sirenix Book, Daphne told her not to look for it because it is dangerous. When the Ancestral Witches attacked Domino, she acquired Sirenix and was ready to fight them by using it, but the Ancesral Witches had placed a spell on Sirenix and when Daphne tried to use it, it turned against her and caused her to become a spirit without a body. Bloom ended by persuading Daphne, who revealed that the Sirenix Book is in the Magic Archives of Alfea.

The Source of Sirenix is found in the cave where Daphne dwells in Lake Roccaluce which grants Sirenix powers to fairies who have completed the Sirenix Quest. It also protects the Sirenix powers. If a fairy does not complete the Sirenix Quest within one lunar cycle, she will her powers forever.



The outfits consist of a sparkly mermaid skin-like top, a belt, scale-like colorful leggings with fins and boots with ribbons wrapped around them. The hair is in a ponytail, with highlight streaks and the hair changes its colors when they go underwater. The fairies also wear bands made of a piece of jewelry, flower, or marine creatures and strips of cloth wound around their arms, and a piece of jewelry in their hair. The wings are colorful and seashell-shaped.

Dark Sirenix

The outfits consists of a body suit, a pairs of stiletto with fins, a glove made of the same material. They wear smeared makeup on their eyes and lips. The hair is in ponytails or pigtails. They have tentacles.


The source of Sirenix

The source of Sirenix


In order for a fairy to earn Sirenix, they must find the Gem of Self-Confidence, the Gem of Empathy, and the Gem of Courage. After that, they need to activate the Source of Sirenix in Lake Roccaluce. Then the fairy's Sirenix Box will appear along with her Sirenix Guardian, who will open the portal to the Infinite Ocean. Finally, Omnia, the Supreme Guardian of Sirenix, will appear with the portal to the Infinite Ocean. Once the fairy crosses the Sirenix Gate, she will earn Sirenix.

Dark Sirenix

A witch does not earn Sirenix by the Sirenix Quest. In the Trix's case, after Tritannus forced Daphne to tell him where the source of Sirenix power was, Tritannus headed to Lake Roccaluce to destroy the Source of Sirenix, so Daphne cannot protect her Sirenix from being stolen by him. After he destroyed the source (which was later restored by the Winx using their Harmonix powers and the power of the selkies), Tritannus absorbed Daphne's Sirenix powers and used his trident to give a dark version of Sirenix to the Trix.

Sirenix Clues

Sirenix Clues were riddles given to the Winx to find the gems of Self-Confidence, Empathy and Courage.



With every twist and turn, the deeper you go until the Shimmering Shells sing with the ocean's voice.


Venture where the dark depth of the ocean shine. A precious gem, self-confidence, lies in the deeps.


Like a ruby shining under the sea, corals are strings that you feel in a key.


To find the gem, you must understand the message in the harp's music.
The Winx had to understand the message in the Ruby Reef's music. It leads them to Data Bridge Castle in which Aisha, Bloom and Tecna have unity.


Find the Flowers of the Depths. It answers only to courage.


Find the Yellow Reef and snatch courage from its jaws.

Magical Abilities

Sirenix grants its possessor access to the Infinite Ocean and gives fairies and witches the ability to use their magic easier in mid-air, on land, and underwater. It also helps them to swim faster.

Special Sirenix Powers

With Sirenix, a fairy has a power that can be used in specific situations.

Every fairy has a different type of this power:

Sirenix Wish

Once gaining Sirenix, a fairy is given a wish which she can ask her Guardian of Sirenix to grant once she has pleased destiny.

Sirenix Curse

Sirenix was cursed by the Ancestral Witches, turning Daphne into a disembodied spirit and Politea into a ravenous monster. The curse also caused the Sirenix power to turn against Daphne when she tried using it to defend herself from the Ancestral Witches. The Sirenix Curse could punish the possessor physically, as revealed when Tritannus was attacked by the Emperor's Throne and Daphne revealed that it is the effect of the Sirenix Curse. Later, by using her Sirenix wish, Bloom breaks the curse put on Sirenix.

Ways to Acquire

Known Sirenix Possessors



Dark Sirenix


  • The name Sirenix comes from the word "siren", which was the name given to legendary creatures who lived on islands at the entrance of the Strait of Messina found between Sicily and southern Italy and which lured sailors with their enchanting voices and music to shipwreck on the rocky coast of their island. They were originally portrayed as being half-woman, half-bird creatures. Later they began to be portrayed as half-woman, half-fish and their English name came to be Mermaids in this appearance. In most languages "sirena", "sirene" or another variation of these is how mermaids are still called.
  • After Sirenix was leaked at Comic Con, it was redesigned.
  • Sirenix adopted some ideas from Harmonix's concepts.
    Sirenix concept

    Harmonix concept art.

  • The fact that Sirenix has the ability to grant wishes may be derived from the fact that in Mythology, mermaids have the ability to grant wishes.
  • This is the first transformation to maintain its 2D poses in 3D.
  • During Musa's Sirenix 2D transformation, her arm ribbon first appears on her left arm, even though it's really supposed to be on her right arm. However, when she strikes her final pose, the ribbon seems to be in the correct position.
  • Flora's Sirenix wings appeared to be smaller than the actual size in her 2D Sirenix final pose.
  • Stella's highlights are in pink in 3D transformation, but become purple in 2D one.
  • Stella's wings are upside down during her transformation.
  • It is unknown if Daphne had already used her Sirenix wish or not.
    • It is also unknown what Daphne's special Sirenix power is.
  • Flora has pink highlights on her hair, but in the 2D transformation and scenes, they mostly disappear.
  • Aisha appears in all 3 episodes in which the Winx earn the 3 mystical gems to finish the Quest of Sirenix.
  • Musa is the only Winx who never uses her Sirenix wish.

Transformation Sequences

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