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View Full Version : What's growing on my rock?

Key Equine
03-18-2009, 11:41 PM
Can anyone tell me what these pink/clear thingys are on my live rock?

http://i610.photobucket.com/albums/tt186/keyequine/New%20Tank%20-%20March%202009/DSC02574.jpg
my2rotties
03-19-2009, 12:17 AM
I think they might be sponges.
reeferious
03-19-2009, 12:53 AM
i believe these are tunicates except yours look much nicer than those growing in my tanks.
High tide
03-19-2009, 03:15 AM
Sea squirts....tunicates.
RSM
03-19-2009, 04:09 AM
I have these aswell.
Myka
03-19-2009, 08:43 PM
Pineapple sponges. Pretty much all tanks will get them, especially in overflows, sumps, and filters. They are beneficial filter feeders.
untamed
03-20-2009, 01:34 AM
I'll vote for tunicates as well. I belive that the pineapple sponges have only 1 primary hole and they look more prickly, while the tunicates always have 2 primary holes and look glassy. My completely non-educated opinion only.
my2rotties
03-20-2009, 01:49 AM
What function do tunicates have? Are they good, bad or neutral?
Myka
03-20-2009, 02:00 AM
Key Equine, judge for yourself - this is a good photo of a Pineapple Sponge. Is this what you have?

http://www.mikesreef.com/images/critters/Hitchhiker14.jpg
chandigz
03-20-2009, 04:10 AM
They look like tunicates to me. They have an incurrent and outcurrent syphon.
They are filter feeders and should not cause any problems in a tank. I've actually purchased larger species.
Key Equine
03-20-2009, 12:54 PM
Based on the info from you guys and the photo of the pineapple sponges, I would say they are tunicates. They definitely have both incurrent and outcurrent syphons.
Thanks for the help with the ID! Glad I don't have to get rid of them because they are neat looking...