The Mermaids are magical creatures that appear in Pop Pixie.
Pop Pixie's mermaids are different, they don't have wings so they can't fly. Like the pixies, they can conjure objects like phones or instruments by wishing and they have their own specialties like music and hair. Their whole habitat is made out of phlux, a coral-like substance they use for nearly everything.
They live in a lake that is connected by a whirlpool portal to the one in Pixieville. In "The Mermaid's Potion", Amore, Chatta, Lockette, Martino and Fixit were turned into mermaids by Rex.
Just as fairies can forge links with pixies, mermaids may be capable of doing the same with these tiny mermaids.