common water moss
... that the common water moss provides a protective habitat for fish eggs and aquatic invertebrates?
... that the <b id="mwCn4"><a href="./Fontinalis_antipyretica" id="mwCn8" rel="mw:WikiLink" title="Fontinalis antipyretica">common water moss</a></b> provides a protective habitat for fish eggs and aquatic invertebrates?