Need identification on possible pest

[juboy27]

Hi, can anyone identify the possible pest ? that’s on this rock thanks

 

[WheatToast]

Pink Stomatella snail. Common hitchhikers and beneficial algae grazers that multiply over time. These are less common than tan ones and about as common as black ones.
https://www.communitycorals.de/wp-content/uploads/2021/09/Photo_1632322115895.jpg

 

[juboy27]

Ok thanks for getting back