Sphaerotilus natans
... that although its colonies are commonly known as "sewage fungus", Sphaerotilus natans is bacterial?
... that although its colonies are commonly known as "sewage <a href="./Fungus" id="mwECw" rel="mw:WikiLink" title="Fungus">fungus</a>", <i id="mwEC0"><b id="mwEC4"><a class="mw-redirect" href="./Sphaerotilus" id="mwEC8" rel="mw:WikiLink" title="Sphaerotilus">Sphaerotilus natans</a></b></i> is <a href="./Bacteria" id="mwEDA" rel="mw:WikiLink" title="Bacteria">bacterial</a>?