Frisco,
Looks like Chondrus crispus to me....usually C.crispus is more "bushy" than the pic in question but if it's just starting to grow it could be single stalks of C.crispus. Could also be Rhodymenia pseudopalmata if your LR is from the Gulf of Mexico or Florida?
More than likely it's Chondrus sp. HTH
Sean
Looks like Chondrus crispus to me....usually C.crispus is more "bushy" than the pic in question but if it's just starting to grow it could be single stalks of C.crispus. Could also be Rhodymenia pseudopalmata if your LR is from the Gulf of Mexico or Florida?
More than likely it's Chondrus sp. HTH
Sean