SAE will eat it when they are small. Amano shrimp are supposed to eat it(but mine don't). Rosy barbs eat the stuff. Flag fish i think eat it too. A Bristlenose pelco might eat it but mine never has, they prefer the non hair green algaes.
Is it all over the tank? Or just on that one plant? I would suggest removing most of it by hand.If you can't get it off try the bleach treatment for it. I have tried almost every algae eater known in my planted tanks and none of them really do the best job for hair algaes. I usually jsut remove affected leaves or it its really bad i bleach it.