The Tale of my Tail

This story is about Magenta a beautiful blue eyed, blonde haired, mermaid with a magenta colored tail with a light purple fin. Also her sister Turquoise (I just call her T cause I am lazy) also with blonde hair and blue eyes but a turquoise tail with dark blue fins. Me (magenta) I am more unsocial I like to stay in my chambers and play with my pet starfish my sister everyone adores her (even though I am oldest) because she loves to hang out with the citizen. Both our parents are fine but since we are royal and live in a castle merpeople treat me and my sister differently than most merpeople. I am sixteen and my sister is fifteen and we need all the help we can get we something strange goes down in our city.