Really hare to tell from that pic but looks more like coraline algae.
I'm thinking it may be Red Gracilaria.... but not sure since I'm going off the internet..Sorry, then I can't tell from that pic.
I'm gonna go with it being some sort of Cheato/macro algae morph
Well if it's that... It says Mexican turbo snails will take care of it... So I'm gonna get a couple just in case. ThanksType in red turf Algae on google images .. It looks like a few strands if you zoom in... hard to tell tho