Is this a white Dendro?

[smilodon]

I got this as hitchhiker for over 3 monthes.
Fist time I got it, i thought it's an aiptasia.
it's tiny when I got it, now it's grow as big as a penny, so it's still pretty small.
it's got skeleton and tentacle just like dendro. just color is transluscent white.
it's open its tentacles day and night and will grab anything falling on it.

 

[Raggamuffin]

looks exactly like a cup coral I got from TBS rocks

Edit: pulled this link for you. http://tbsaltwater.com/thepackage/organisms.html
look at the cup coral listing there.

 

[davelinks]

thats a sick little coral, might even be balano? dunno if youll find those in tampa though haha

 

[Nam Nguyen]

i dont know what to call that but i have one the same as your bit big like Dendro and the tenacle longer. look really nice coral.

 

[pgammon]

Could be a type of Rhizotrochus.

 

[donkeys4hire]

plus 1 for Rhizo

 

[mscarpena]

The common name is a cup coral and they are common hitch hiking corals from aquaculture live rock that comes from the Caribbean.

 

[cocoaandme]

Could be a type of Rhizotrochus.

plus 1 for Rhizo

Never seen a Rhizo with that skeletal structure and the flesh covering the outer portions of the structure. My vote is for balanophyllia.

 

[Fin Mike]

The common name is a cup coral and they are common hitch hiking corals from aquaculture live rock that comes from the Caribbean.

I have a bunch of these on my rock and they do come from the the Atlantic/ Caribbean/ gulf coast. They are cup corals and they are pretty cool. Some of mine are getting big and are starting to spring multiple heads.

 

[Aquabacs]

Looks like Paracyathus sp.


Mike

 

[aninjaatemyshoe]

Phyllangia americana

 

[Trichome]

I have a whole colony of that exact coral. I got it from a friend that had it hitchhike on some live rock he got. It seems to be pretty bullet proof and will eat about anything. From what i can tell it grows pretty fast. Here is a picture of mine:

 

[Glazner]

do they stay open, day and night?

 

[Denvercherub]

I found some on my rock on a new set up. Does it sting other coral?