What is this?

[flower]

I have a lettuce coral frag that I have had for 3 years. It never grew much, but it did get bigger and grew another leaf just last year. Just below it another "coral" has shown up. It does not look like the original one on the rock, it is greenish in color and the lettuce leaf coral is fleshy color.
Nor does it match any mushroom coral I have in the tank ( hairy, green stripe, or true blue)
Years ago I had put an umbrella mushroom in the tank, it was shaped kind of like this...it disappeared almost as soon as I put it in the tank...could it be that, or what do you guys think?

 

[flower]

Originally Posted by Flower
http:///forum/post/3184033

I have a lettuce coral frag that I have had for 3 years. It never grew much, but it did get bigger and grew another leaf just last year. Just below it another "coral" has shown up. It does not look like the original one on the rock, it is greenish in color and the lettuce leaf coral is fleshy color.
Nor does it match any mushroom coral I have in the tank ( hairy, green stripe, or true blue)
Years ago I had put an umbrella mushroom in the tank, it was shaped kind of like this...it disappeared almost as soon as I put it in the tank...could it be that, or what do you guys think?
Sorry, I forgot the picture:

 

[bang guy]

Looks like a small piece of Cabbage Coral - Merulina sp.

 

[flower]

Originally Posted by Bang Guy
http:///forum/post/3184091
Looks like a small piece of Cabbage Coral - Merulina sp.

I thought it was a growth from the "mommy" at first but is a completely different color, light green when the main coral is fleshy color, is that normal? Also the little knobs look different too, it has a bump in the center while the main coral doesn't. Its edges are really fat and rounded, main coral has flat thick, edges.

 

[bang guy]

Yes, it is common for smaller Cabbage colonies to have a green irridescence. You should know for sure in a few months when it grows out

 

[flower]

Originally Posted by Bang Guy
http:///forum/post/3184462
Yes, it is common for smaller Cabbage colonies to have a green irridescence. You should know for sure in a few months when it grows out

Thanks! When it first showed up I thought..Hoped..that it was new growth, but it looked so different.