This may help.
It's in the opening of cave and low in tank. So not bleached out.
There are 2 in pic. 1 red , 1 green.
The green one sometimes swell like a sack and is a very pastel yellowy green. You can see thru it.
It has 1/4 " extensions that look like hands that come out all over it.
When it deflates it just gently flaps in the current.
I've looked in several books and all over net and not found another.
There are a couple other green ones in tank but hard to get pic.
If I can borrow better camera will try to get better pic.
Thanks
