Results from the woundfin Plagopterus argentissimus embryo predation trials conducted at the Bozeman Fish Technology Center, Montana, from May 26 to June 21, 2011. Columns show the date of each trial, the randomly selected experimental tanks, initial number (#) of embryos placed in each tank, number of embryos remaining in each tank after 4 h, number of embryos predated in each tank, and whether or not eyed-embryos were used (Y  =  yes, N  =  no).