Mann Lake
... that the trout population in Mann Lake was once threatened by goldfish, prompting the Oregon Department of Fish and Wildlife to intervene?
... that the <a href="./Trout" id="mwAVE" rel="mw:WikiLink" title="Trout">trout</a> population in <b id="mwAVI"><a href="./Mann_Lake" id="mwAVM" rel="mw:WikiLink" title="Mann Lake">Mann Lake</a></b> was once threatened by <a href="./Goldfish" id="mwAVQ" rel="mw:WikiLink" title="Goldfish">goldfish</a>, prompting the Oregon Department of Fish and Wildlife to intervene?