Sunfish help

<p>I caught four fish out of the nearby lake this weekend that are new to me. I think they are all the same species and have&nbsp;tentatively identified them as Bluegills. However, sunfish are particularly confusing to me so I would appreciate any input from you all. This is in the <a href="http://cfpub.epa.gov/surf/huc.cfm?huc_code=03100206">Tampa Bay Watershed</a>&nbsp; Thanks!</p> <p><img alt="" src="http://24.media.tumblr.com/7dc0de84494ea6edafb53bf82ea4c644/tumblr_mmovxt8klc1qjrzplo1_1280.jpg" style="width: 600px; height: 450px;" /></p> <p><img alt="" src="http://25.media.tumblr.com/3a2fb6cc302dae97ddc6f135065906a8/tumblr_mmovxt8klc1qjrzplo2_1280.jpg" style="width: 600px; height: 450px;" /></p> <p><img alt="" src="http://25.media.tumblr.com/1c226fa348c1203af9321eca54431b72/tumblr_mmovxt8klc1qjrzplo3_1280.jpg" style="width: 600px; height: 800px;" /></p> <p><img alt="" src="http://24.media.tumblr.com/12421a609235affd371f6acc0f430b1b/tumblr_mmovxt8klc1qjrzplo4_1280.jpg" style="width: 600px; height: 450px;" /></p>