Fish ID, ? GSF pure strain or hybrid

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Fish ID, ? GSF pure strain or hybrid #579256 05/15/26 09:44 AM
Joined: Jun 2015 Posts: 646 Likes: 94 Grinnell, IA DrLuke
DrLuke Joined: Jun 2015 Posts: 646 Likes: 94 Grinnell, IA	Caught this fish last evening off the dock. I think I'm seeing some GSF (green sunfish, in case I'm using the wrong initials) genetics, yes? Light edges to the fins seemed odd. Opercular tab also seemed to have a red edge to it, like a red ear sunfish, which I've stocked for snail control. Fish was ~ 7 inches long, and body condition was good (plump). Mouth was no wider than typical BG mouth. "He who thinks he can and he thinks he can't, they're both usually right." - Wyatt Hendrickson, 2025 NCAA Hwt Champion

Re: Fish ID, ? GSF pure strain or hybrid DrLuke #579257 05/15/26 12:32 PM
Joined: May 2004 Posts: 14,674 Likes: 509 40 N, 82 1/2 W Theo Gallus Moderator Lunker
Theo Gallus Moderator Lunker Joined: May 2004 Posts: 14,674 Likes: 509 40 N, 82 1/2 W	Those yellow-tipped fins and the thin opercule edge are definitely GSF-ish. "Live like you'll die tomorrow, but manage your grass like you'll live forever." -S. M. Stirling
	1 member likes this: DrLuke

Re: Fish ID, ? GSF pure strain or hybrid DrLuke #579264 05/16/26 07:58 AM
Joined: Jan 2011 Posts: 656 Likes: 149 southwest Colorado 4 4CornersPuddle
4CornersPuddle 4 Joined: Jan 2011 Posts: 656 Likes: 149 southwest Colorado	Your mystery fish looks very much like some of my naturally occuring HBG. Coloration, intermediate mouth size, and chunky body shape match up. Last edited by 4CornersPuddle; 05/16/26 07:59 AM. Reason: addition of info
	1 member likes this: teehjaeh57

Re: Fish ID, ? GSF pure strain or hybrid DrLuke #579265 05/16/26 09:44 AM
Joined: Apr 2002 Posts: 15,993 Likes: 1496 Northwest Ohio - Malinta OH B Bill Cody Moderator Ambassador Field Correspondent Lunker
Bill Cody Moderator Ambassador Field Correspondent Lunker B Joined: Apr 2002 Posts: 15,993 Likes: 1496 Northwest Ohio - Malinta OH	I concur Hybrid BG of some sort with one of the parents GSF. Dr Luke Do you have RES in the pond???? aka Pond Doctor & Dr. Perca Read Pond Boss Magazine - America's Journal of Pond Management

Re: Fish ID, ? GSF pure strain or hybrid Bill Cody #579268 05/16/26 10:28 AM
Joined: Nov 2007 Posts: 4,914 Likes: 1002 Central Kansas F FishinRod Lunker
FishinRod Lunker F Joined: Nov 2007 Posts: 4,914 Likes: 1002 Central Kansas	Originally Posted by Bill Cody I concur Hybrid BG of some sort with one of the parents GSF. Dr Luke Do you have RES in the pond???? Yes, he has stated that he stocked RES. (FYI, since I assume you have a comment based upon that scenario.)

Re: Fish ID, ? GSF pure strain or hybrid Bill Cody #579270 05/16/26 06:13 PM
Joined: Jun 2015 Posts: 646 Likes: 94 Grinnell, IA DrLuke
DrLuke Joined: Jun 2015 Posts: 646 Likes: 94 Grinnell, IA	Yep. Stocked them for snail control "He who thinks he can and he thinks he can't, they're both usually right." - Wyatt Hendrickson, 2025 NCAA Hwt Champion

Re: Fish ID, ? GSF pure strain or hybrid 4CornersPuddle #579271 05/16/26 06:16 PM
Joined: Jun 2015 Posts: 646 Likes: 94 Grinnell, IA DrLuke
DrLuke Joined: Jun 2015 Posts: 646 Likes: 94 Grinnell, IA	Originally Posted by 4CornersPuddle Your mystery fish looks very much like some of my naturally occuring HBG. Coloration, intermediate mouth size, and chunky body shape match up. That's what I was afraid of. Bummer. We'll have to see how the GSF fit into the mix. "He who thinks he can and he thinks he can't, they're both usually right." - Wyatt Hendrickson, 2025 NCAA Hwt Champion

Re: Fish ID, ? GSF pure strain or hybrid DrLuke #579300 05/18/26 10:43 AM
Joined: Mar 2005 Posts: 22,032 Likes: 483 Miss. E ewest Moderator Hall of Fame 2014 Lunker
ewest Moderator Hall of Fame 2014 Lunker E Joined: Mar 2005 Posts: 22,032 Likes: 483 Miss.	HBG. Here are some Green Sunfish id threads with pics. Archive - Sunfish - all types https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=92482#Post92482 https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=137689&page=1 https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=483259&page=1 https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=478117&page=1 Last edited by ewest; 05/18/26 10:56 AM.

Re: Fish ID, ? GSF pure strain or hybrid DrLuke #579302 05/18/26 12:48 PM
Joined: Apr 2002 Posts: 15,993 Likes: 1496 Northwest Ohio - Malinta OH B Bill Cody Moderator Ambassador Field Correspondent Lunker
Bill Cody Moderator Ambassador Field Correspondent Lunker B Joined: Apr 2002 Posts: 15,993 Likes: 1496 Northwest Ohio - Malinta OH	Dr. - you could have a RES crossed with a GSF. It is a good probability the eggs (offspring) of this cross may not be fertile nor hatch. Although old work with hybrids indicated the RESXGSF did produce limited numbers of offspring. Last edited by Bill Cody; 05/19/26 10:03 AM. aka Pond Doctor & Dr. Perca Read Pond Boss Magazine - America's Journal of Pond Management
	1 member likes this: teehjaeh57

Re: Fish ID, ? GSF pure strain or hybrid DrLuke #579307 05/19/26 01:07 PM
Joined: Mar 2005 Posts: 22,032 Likes: 483 Miss. E ewest Moderator Hall of Fame 2014 Lunker
ewest Moderator Hall of Fame 2014 Lunker E Joined: Mar 2005 Posts: 22,032 Likes: 483 Miss.	Need to Understand HBG Genetics - Pond Boss Forum https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=474445&page=3 W.F. CHILDERS Illinois Natural History Survey Urbana, Illinois U.S.A. In this paper R refers to red-ear sunfish, B to bluegill, G to green sunfish, and W to warmouth. 4.1 Sex Ratios of F1 hybrids Sexually mature F1 hybrids were collected from each population and sexed. Of the 10 kinds of viable F1 hybrids, seven were predominately males (RB, BR, and BG were 97 percent males; WG were 84 percent males; and RG, GB, and BW were approximately 70 percent males), two were approximately 50 percent males (GR and RW), and one was predominately female (GW was 16 percent males). Ricker (1948) determined the sex of 428 BR F1 hybrids in Indiana and found them to be 97.7 percent males. Last edited by ewest; 05/19/26 01:07 PM.
	1 member likes this: FishinRod

Re: Fish ID, ? GSF pure strain or hybrid DrLuke #579309 05/19/26 02:26 PM
Joined: Jan 2008 Posts: 8,883 Likes: 117 Lincoln, NE teehjaeh57 Chairman, Pond Boss Legacy award; Moderator; field correspondent Lunker
teehjaeh57 Chairman, Pond Boss Legacy award; Moderator; field correspondent Lunker Joined: Jan 2008 Posts: 8,883 Likes: 117 Lincoln, NE	HBG F1+ genetic expression gets pretty hard [for me] to ID - but I also tend to lean towards Bill's call - if I had to wager I'd say either GSF/RES or HBG [GSF/BG] x RES. I don't think I see any BG characteristics, so likely the former? Take heart Luke, I think naturally occuring F1+ lepomis hybrids are really cool - sharpens your genetic discernment, leads to sometimes exotic/stunning specimens, and likely has low risk regarding recruitment, etc. Throw in the hybrid vigor factor and I'd just keep sampling and posting your beauties for our collective enjoyment! Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau
	2 members like this: FishinRod, 4CornersPuddle

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