What will help with this

[byerlyjb]

i have this algae growing on my rock wall. Though it is not growing crazy, it is still there. Any thoughts on what will help control it? Maybe there is a little critter I could get?

 

[twilliard]

Hard to tell..
Dinoflagellates perhaps

 

[Salty1962]

Lawnmower Blenny

 

[TUSI]

A good cleaning crew will do the job.

 

[Breakthecycle2]

Is it white?I can't tell from the pictures.