Yellow what?
Moderator: snoopdog
- Amphiprion
- Astrea snail
- Posts: 1472
- Joined: Sat Mar 05, 2005 10:41 pm
- Location: Mobile, AL
Oscula do not retract when touched. If anything that looks like a sponge retracts, it may be an ascidian or sea squirt colony. I am still sticking to porites, since it is on a porites skeleton and looks like unhappy porites polyps. I have seen many mainly dead colonies with a few very small, lighter, tissue-covered areas like that.
Andrew
25g planted nature aquarium
25g planted nature aquarium