Mystery blob!?!

Gordonious · 07/19/2006, 06:59 PM

Mystery blob

I have a mystery mass of white and greenâ€¦ stuff under one of my piece of LR. I took the photo below a couple days ago. Tonight I noticed my blue Porcelain Crab, (Petrolisthes sp.) hovering over it, upside down of course. I tried to see if the crab was eating at it or protecting it, but didnâ€™t see him exhibiting either of these behaviors.

On possibility I thought of, just throwing something out there because I am clueless, I have three mature convict blennies/engineer goby fish in the tank. Perhaps some eggs? The Porcelain crab has been in the tank for well over a year now and there is nothing that could have possibly mated with it which I believe is necessary to get any eggs.

Jon

PS. I will try to get more pics soon if possible, it's in a hard spot to get a good angle on.

csb · 07/19/2006, 07:05 PM

Looks like it could be a sponge ... I recently found a similar sponge growing under one of my rocks on the bottom of the tank. I found it when rearranging rock, and since placing it in the light, it has receded and I expect it to disappear... except that it's probably still growing beneath the rock.

Blown 346 · 07/19/2006, 07:05 PM

That looks like sponge, which is a great filter feeder.

Gordonious · 07/19/2006, 07:23 PM

If it's a sponge it isn't getting much food right now. The crabs sucking it all in, lol.

I was going to try to snap some pics with the crab chilling on it. I turned around just not to do so and the lights are already out, so I will get it another time unless there is major concern about it.

This may have been in my tank since I've purchased it with out me knowing. I saw something similar to this about a year ago and before that I hadn't added anything to my tank in a long time.

Jon

Gordonious · 08/16/2006, 03:40 PM

A couple days ago I believe I witnessed something that may support another possibility. Iâ€™m 99% sure I saw two of my convictsâ€¦ going at it.(trying to keep this pg) It was rough and wild and did not last terribly long. They did it once then hung out together then again a couple minutes later. When they are doing it the bottom half of there bodies have been under one of the pieces of LR so I could not see too much. May I possibly have eggs?

I guess, as brought up in another thread by Angel*Fish, I need to find out if the convicts are demersal, meaning they lay eggs that stick to rocks or something near the bottom".

Tat2demon · 08/16/2006, 05:01 PM

Nah thats definatly a sponge.

reefshadow · 08/16/2006, 08:39 PM

Afaik, damsels adhere their eggs on a surface just like clowns, who are closely related to damsels. you would be likely to see the mass of eggs mature and hatch within a week or two.

shinny · 08/17/2006, 05:34 PM

that looks like what I have in my tank. I think it is some sort of sponge. Mine grew between two rocks and "glued" them together. Kinda cool looking.

07/19/2006, 06:59 PM	#1
Gordonious Registered Member Join Date: Jan 2004 Location: Newark DE Posts: 3,393	Mystery blob!?! Mystery blob I have a mystery mass of white and greenâ€¦ stuff under one of my piece of LR. I took the photo below a couple days ago. Tonight I noticed my blue Porcelain Crab, (Petrolisthes sp.) hovering over it, upside down of course. I tried to see if the crab was eating at it or protecting it, but didnâ€™t see him exhibiting either of these behaviors. On possibility I thought of, just throwing something out there because I am clueless, I have three mature convict blennies/engineer goby fish in the tank. Perhaps some eggs? The Porcelain crab has been in the tank for well over a year now and there is nothing that could have possibly mated with it which I believe is necessary to get any eggs. Jon PS. I will try to get more pics soon if possible, it's in a hard spot to get a good angle on.

07/19/2006, 07:05 PM	#2
csb Registered Member Join Date: Jan 2006 Location: New Hampshire Posts: 541	Looks like it could be a sponge ... I recently found a similar sponge growing under one of my rocks on the bottom of the tank. I found it when rearranging rock, and since placing it in the light, it has receded and I expect it to disappear... except that it's probably still growing beneath the rock. __________________ Winter ski bum, summer reef bum. Tank pics at http://picasaweb.google.com/snojrnl Current Tank Info: 30g mixed reef

08/16/2006, 05:01 PM	#6
Tat2demon Registered Member Join Date: Mar 2006 Location: Sioux Falls, SD Posts: 833	Nah thats definatly a sponge. __________________ Nate cham - "Taste it, if it tastes like poop.....it is." Current Tank Info: 400 gallon in progress. 8x3x2.5

08/16/2006, 08:39 PM	#7
reefshadow Registered Member Join Date: Jan 2003 Location: Central Washington Posts: 1,786	Afaik, damsels adhere their eggs on a surface just like clowns, who are closely related to damsels. you would be likely to see the mass of eggs mature and hatch within a week or two. __________________ All Your Coral Are Belong To Us Current Tank Info: 30 Deep Blue shallow mixed rimless, MP10, Ecoxotic LED's, SCA 301 skimmer.

07/19/2006, 07:05 PM	#3
Blown 346 Registered Member Join Date: Apr 2004 Location: Rockford, Illinois Posts: 6,596	That looks like sponge, which is a great filter feeder.

07/19/2006, 07:23 PM	#4
Gordonious Registered Member Join Date: Jan 2004 Location: Newark DE Posts: 3,393	If it's a sponge it isn't getting much food right now. The crabs sucking it all in, lol. I was going to try to snap some pics with the crab chilling on it. I turned around just not to do so and the lights are already out, so I will get it another time unless there is major concern about it. This may have been in my tank since I've purchased it with out me knowing. I saw something similar to this about a year ago and before that I hadn't added anything to my tank in a long time. Jon

08/16/2006, 03:40 PM	#5
Gordonious Registered Member Join Date: Jan 2004 Location: Newark DE Posts: 3,393	A couple days ago I believe I witnessed something that may support another possibility. Iâ€™m 99% sure I saw two of my convictsâ€¦ going at it.(trying to keep this pg) It was rough and wild and did not last terribly long. They did it once then hung out together then again a couple minutes later. When they are doing it the bottom half of there bodies have been under one of the pieces of LR so I could not see too much. May I possibly have eggs? I guess, as brought up in another thread by Angel*Fish, I need to find out if the convicts are demersal, meaning they lay eggs that stick to rocks or something near the bottom".

08/17/2006, 05:34 PM	#8
shinny Registered Member Join Date: Jan 2006 Location: Michigan Posts: 161	that looks like what I have in my tank. I think it is some sort of sponge. Mine grew between two rocks and "glued" them together. Kinda cool looking.