Yellow grubs. Do search in images for "yellow grub in fish".

https://www.bing.com/images/search?q=yel...h&FORM=IGRE



https://en.wikipedia.org/wiki/Clinostomum_marginatum


http://www.michigan.gov/dnr/0,4570,7-153-10364_52259_10950-26966--,00.html




Last edited by ewest; 09/26/16 01:37 PM.