20142 Mermaid Smurfette - Blue Tail.
The Smurfette mermaid is sitting on a rock with a necklace and a blue tail. She loves the water and swimming with the fish.
Though it is a strange choice of a smurf figurine, it must have been fairly popular it was sold by Schleich between 1982 to 1988 and then again 1993 to 1996. During this time, it was also used on several triangle pedestals.