Rhinosporidiosis is caused by-
Rhinosporidiosis is a disease caused by the organism Rhinosporidium seeberi, which was once thought to be a fungus but is now believed to be a rare aquatic protistan parasite of fish. First described in 1900 by Guillermo Seeber, it generally presents as swollen, pink or red polyps in the nasal cavity or the ocular conjunctivae. Other sites of infection are rare.
Fungus
Virus
Bacteria
Protozoa