Life-History and Habits of the Saomon, Sea-Trout, Trout, and Other Freshwater Fish; London, England : Adam and Charles Black, 1910 ; page 119
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{{Information |Description={{en|1=Male grilse (Salmo salar) showing fungus partly developed on head}} |Source=University of Washington Libraries [http://content.lib.washington.edu/cdm4/item_viewer.php?CISOROOT=/fishimages&CISOPTR=49595&CISOBOX=1&REC=2] |A