Which sponge is it? Spongilla?

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Syed Abbas Jafar

Muntasir:

Did not provide scale, but looks like Spongilla lacustris. See link:

https://www.epa.ie/pubs/reports/research/sss/Classification%20of%20freshwater%20sponges.pdf

Best

Syed

Shriraj:

Yes, Spicules and Gemmules are important but general morphological features provide clues for this specimen to be a lacustrine Sponge: S. lacustris. Muntasir would provide additional evidence based on spicules. Kindly see this link:

http://www.entomoljournal.com/archives/2014/vol2issue3/PartB/21.pdf

Edgardo Ortiz-Corps

Looks like Spongilla, but need preparation of spicules (morphology and meristic characteristics) and gemmules.