The answer is a resounding yes and no!

The sunfish diet has been found to change with sunfish size from food found foraged on the sea floor by small sunfish, to a ‘jelly fish’ diet in larger sunfish.

Season may also play a part in the changing dietary habits of sunfish.

Reference: Syväranta et al (2012), Nakamura and Sato (2014), Nakamura et al (2015), Sousa et al. (2016)