this might help u
http://www.algaebase.org/PictureSear...36B4GPg314854A
Red
Macroalgae (Botryocladia Sp.)
Sometimes called "red grape caulerpa" although it's not caulerpa at all.
Long slender branches that extend to rows of bright red bladders.
This is considered a rare variety. Commonly found on reef ledges.
Requirements: strong light, iron & manganese.
Care: moderate.
This algae works great for both nutrient export as well as feeding something nutritious to your algae eating fish. If you intend on growing this to use as a consistent source of nutrient removal or fish food, you'll have to grow it in a isolated place in your system as algae eating fish will devour this algae in no time.
I'm told it grows slow due to only having one root system (unlike green grape).
also told tangs like it more than green grape in general.