See
http://aquanic.org/publicat/state/il-in/as-495.htm Another study showed growth to 25C or 77F. One source showed upper range 30C or 86F. One study showed the 2 common methods of measuring energetics in YP showed skewed results (aka something going on wrt growth and energy use) starting at 22C.
I think you have this study.
Field Test of Two Energetic Models for Yellow Perch