If you have a good a high quality image, it will be better, however I think it might be Batrachospermum!!

please give information about filamentous alga (cell diemension, unbranched or not, chloroplast type).

Thank youy Mr. Abuzer Çelekli. This is unbrached algae. I have this picture quality but dont' have measurement

Dear Mr- Roshan,

I am sorry to identify an algae you need better pictures, measuremets and information about the habitat. If it is a freshwater algae, perhaps you will find something here: http://www.sinicearasy.cz/matlas or https://www.lanuv.nrw.de/landesamt/veroeffentlichungen/publikationen/arbeitsblaetter?tx_cartproducts_products%5Bproduct%5D=301&cHash=db15bff8ae44071296d50c7fd87d6ffd. These publications are free downloads.

All the best

Antje

@Roshan Bharatbhai Bhagat, this should be Oedogonium. Though the picture is not too clear, you can check https://www.algalweb.net/Oedogon.htm. Cheers.

Dear Researcher

Catherine is right. This should be Oedogonium. For more clarification you should provide good quality photographs.

Best Wishes