Seiriin Reference and Trait List (Closed Species)

As promised, here's the new Seiriin trait list!
MUTATIONS REFERENCE:
 

General Infos:

Specie's Name: Seiriin (sing.) Seiriines (plur.)
 Pronounce: say-reen / say-reens
 Creatures dimension: from 1.50m to 2.00m
 Story: Seiriines are aquatic creatures that live in the Ocean. Their society is headed by a team of wises. Seiriines's society is developed and intelligent, with good tecnologies. There is only one big city under the sea: Aitheiria (ethereal in Greek). It's divided into zones and has a big castle in the middle named Kardia.
 Powers: The center of every Seiriin's powers are their fingertips. 
Their touch can make others happy, heal and also create items made of energy. 
Every Seiriin has a different colour for its energy and their fingertips can glow in the dark.
 Demon Seiriines: Demon Seiriines are rare creature born during eclypses, full of darkness and evil thoughts.
They're banned from Aitheiria and Kardia.

Traits:

• Eyes: Seiriines have always black eyes with a white sclera. Eyes can't have any other colours, except for blind Seiriines which have white eyes.
• Hands: Seiriines have 4 fingers. They don't have nails, but their fingertips are colored and can glow like fireflies. Normally they have one color, but some Seiriines have 2 or 4 colours (it's a Rare trait!) and their energy is powerful.
• Ears: Seiriines's ears are big and long, almost no one has tiny ears. Ears can have different shapes, like feathers, jagged, pointy or have holes, the trait rarity depends on the position.
• Neck: On every Seiriin neck there are 4 gills (2 per side) which are used to breathe underwater. They can breathe air too, but for a little time.
• Arm-fins: The most peculiar feature of the Seiriin species is the Arm-Fin. They are very thin and almost transparent, like veils, but really strong. They are used to swim faster and control the direction like wings or rudders, but they're also a symbol of nobility. These fins are connected to their arms and, for the "standard" type, also to their hips. They can have different shapes and colors.
• Tail: As mermaids, Seiriines have a fish tail. It can have any shape and dimension, the trait rarity depends on the primary shape.
• Horns: are very rare for the Normal Seiriines, while Demons always have them. Sometimes a Seiriin can have one horn (it's rare) of any shape and color.
  Powerful and noblest Seiriines can have a crown of 5-6 tiny horns and this is a Legendary trait. It's said that these Seiriines are blessed by Poseidon.

Seiriines often wear jewels made of metal and shells. It's common to see piercings, rings, bracelets and earrings anywhere on their body.

Demons:

Demon Seiriines are considered as a sub-species. They have black fingertips and black energy, eyes have black sclera with a neon/fluo colored pupil, that glows in the dark.
Their fins -arm and tail- are like rotten/ghost veils, fringed and dark.
They don't have ears, but tiny holes to hear and they always have a pair of horns.
Their colours are always darker than normal Seiriines.

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