Both species' strong resemblance to sea anemones has led to a discussion between syrenilogists concerning their current status a mermaid or whether they would better belong to a separate category altogether. Nevertheless, until we can procure suitable DNA samples to settle this matter, we will continue to treat them as mermaids.
Location & habitat
Sightings have been reported at different tropical, coastal coral reefs. We assume they can be found anywhere close to sea anemones.
Appearance & behaviour
Her body is of an odd, triangular shape, the face is masklike and barely humanesque. The body is completely covered by short to medium length tentacles. The mouth opening is oval and filled with tissue of a comblike texture, filtering and circulating water. Her small eyes are round and pearly, rimmed with tentacles giving a freakish impression of human lashes. Apart from protecting the eyeballs their pupose seems to be of a social nature.
So far this is the only species of mermaid known to have developed a language of elaborate gestures and blinks of her eyes and eye-adjacent tentacles.
Further it stands to reason that ocular tentacles of seperate individuals coming into contact create a hormonal or neurological response. Some mermaids have been observed to entangle their facial tentacles upon meeting. Both pause in a trancelike state of undefined duration before parting ways.
It is unknown whether this action is a sign of physical bonding or telepathic communication. Some voices in the field have been proposing a pleasure response upon touch, presumably to keep individuals of one species sharing the same hunting grounds on amiable terms and such preventing conflict.
Serra Fatua is a predatory mermaid species specialized on hunting clownfish living in symbiosis with sea anemones. The mermaid will crouch between corals and anemones emulating their appearance. Once a clown fish, seemingly protected by the proximity of the sea anemones, approaches, Serra Fatua will attach the tentacles of her hands to the fish's body. Then a thorn emerges from the opening at the centre of her palm and pierces through the scales and skin of her victim. The mermaid will proceed to feed.
To ensure a steady food supply, Serra Fatua will relocate ever so often.
She seems to be immune to sea anemones' toxins.
Dr. Cecilia Lillefisk, Mermaid Scientist and renowned author of 'Swimming on land and why she will never love you back'
Note to artist: We will need explanatory sketches of her hands, hunting technique and ocular tentacles interacting.
Unrelated: Why did you make her look like my great aunt? This is slightly disturbing. Please refrain from referencing any family members in the future.