id for black spongy thing

[jill]

I just noticed an irregular patch of something black on my live fiji rock. I will try to get a picture but its about as big as a quarter and 1/4 inch tall. It feels spongy to the touch and reminds me of that green mat algae.
Any ideas of what it could be?

 

[rcw98022]

cyano bacteria

 

[jill]

I've had cyano in the past and this is nothing like it.

 

[1fishkeeper]

Maybe a black sponge they come in all types of colors, shapes, and sizes.

 

[lizardarm]

Maybe a black sponge they come in all types of colors, shapes, and sizes.

I agree, I've got a couple patches of what sounds like the same stuff. Hitched in and seems to do well in the deep dark recesses of my tank.

 

[jill]

cool. thanks. although mine is right in the light.
Does anyone know of a good sponge id page? I can't find anything good with google.

 

[user 26995]

cool. thanks. although mine is right in the light.
Does anyone know of a good sponge id page? I can't find anything good with google.

Check out this site
http://spongeguide.org/

 

[roscoe]

Yeah nothing harmfull. I have black pink and tan sponges growing in some parts of my rock. they never bother anything.

 

[lizardarm]

That's a pretty good link there! I like their search function. Too bad it's only Caribbean sponges.

 

[jill]

hey! thanks! that is a great site. I do see that its Caribbean sponges but my sponge sounds (and looks) like the aremisina melana. i do have a little hawaiian rock and another site says it grows there too.
as a newbe I am loving reefkeeping. its been tough to learn all this stuff but so rewarding.

 

[ashton]

Check out this site
http://spongeguide.org/

That sponge guide is an awesome site. I was able to ID a few of the sponges growing in my tank.

 

[burning2nd]

2 cool thanks for that link

i have Neopetrosia rosariensis

 

[user 26995]

2 cool thanks for that link

i have Neopetrosia rosariensis

Its fun finding things like this. I spend a little time looking for sites like these because I have sooo much going on in my tank and I want to know what it is. Like all the different mini brittle stars I have and the sponges and corals and macro algaes.