Identification request

[somebloke]

Assistance appreciated. My tank had been fish-fallow for a couple of months and I've been watching a bunch of other life flourish. Not sure what this is. Thanks.

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[somebloke]

I'd estimate that thing about 1 inch in diameter at this point

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[billdogg]

the tubes look like tunicates to me. The stuff at their base I vote for algae of some sort

 

[heathlindner25]

I would say a sponge

 

[Sugar Magnolia]

Yep, those a syphons sticking out of a sponge.

 

[ddanis60]

I have a bunch of sponges that look a lot like that


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