Ponyo

Ponyo is the cute and beautiful main protagonist of the animated Studio Ghibli film Ponyo. She is a fish at first when she meets another one of the main characters named Sosuke. He really likes Ponyo and they end up being best friends. As Ponyo's father tries to keep her away from the humans it fails. She accidentally licks Sosuke to cure him of his cut and she tastes blood. Later on she becomes more like a human and abandons her magic so she could live with Sosuke.