Anybody ID this Tube or Feather Duster worm?

[Skyhigh]

Sorry Bryan, I'm half asleep at the computer right now and wasn't paying enough attention. Edited my previous post. So how does a Christmas tree worm fit into that classification scheme? And what about Filograna elatensis and Filograna implexa? Both have hard calcareous tubes and neither is a Coco worm?

they both have to have the coral to live for the most part dusters and cocos do there own thing

[Wy Renegade]

calcium tube are all going to to in 1 class and slime tube would be the other

Not to argue, but techniqually they are both in the same class: Class Polychaeta (Feather Duster worms) of the Phylum Annelida (the segmented worms). Polychaeta has four different families: Sabellidae (soft tubes), Serpulidae (Calcarous tubes), Spirorbidae (diminitive tubes), and Sabellaridae (tubes of cemented sand or substrate grains). I agree that they are family Serpulidae, but I don't think they are Protula magnifica (Coco worms) or Spirobranchus giganteus (Christmas tree worms).

[Wy Renegade]

they both have to have the coral to live for the most part dusters and cocos do there own thing

Thats an interesting point on the Spirobranchus giganteus (Christmas tree worm), I asked somebody about that on another forum, and they told me their coral died, but the worms survived, and they later sold the rock full of worms. FWIW neither Filograna elatensis and Filograna implexa are associated with coral and both have a hard calcareous tube.