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Sexing Redear Sunfish?
#359690 12/11/13 12:17 PM
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Are there any reliable methods to determine the sex on RES outside of the spawn? Any tell-tell signs one way or another?



Re: Sexing Redear Sunfish?
Shorty #359696 12/11/13 12:40 PM
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Steve I generally observe that females have more yellow/cream sides and bottom and are lighter than males, which are typically have more black checkering on the sides. Also the red margin on the opercular tab seems to be deeper, darker in color on males than females where it's lighter and maybe more light orange than dark red. Sexing younger fish out of spawning season for me personally is kinda a crap shoot.


Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

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Re: Sexing Redear Sunfish?
teehjaeh57 #359699 12/11/13 12:51 PM
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Thanks TJ!

The reason I asked is that two of the five aquarium redears I have have started turning darker over the last week. Both are 18 months old and around 7-1/2".



Re: Sexing Redear Sunfish?
teehjaeh57 #359710 12/11/13 01:19 PM
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Originally Posted By: teehjaeh57
Steve I generally observe that females have more yellow/cream sides and bottom and are lighter than males, which are typically have more black checkering on the sides. Also the red margin on the opercular tab seems to be deeper, darker in color on males than females where it's lighter and maybe more light orange than dark red. Sexing younger fish out of spawning season for me personally is kinda a crap shoot.


Bingo! Right on the money!


If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.






Re: Sexing Redear Sunfish?
teehjaeh57 #359717 12/11/13 01:43 PM
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Originally Posted By: teehjaeh57
Steve I generally observe that females have more yellow/cream sides and bottom and are lighter than males, which are typically have more black checkering on the sides. Also the red margin on the opercular tab seems to be deeper, darker in color on males than females where it's lighter and maybe more light orange than dark red. Sexing younger fish out of spawning season for me personally is kinda a crap shoot.


Excellent post!


Holding a redear sunfish is like running with scissors.
Re: Sexing Redear Sunfish?
Shorty #359718 12/11/13 01:44 PM
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By the way, 7.5 inches at 18 months is outstanding! Nice work, young man.


Holding a redear sunfish is like running with scissors.
Re: Sexing Redear Sunfish?
Shorty #359722 12/11/13 02:13 PM
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I have serious difficulty applying this ID process in reality...

I think I will stock some verified males for the trophy male BG, female YP pond this Spring. I think 15-25 RES would perform very well and keep my snails managed - limited competition could yield some impressive growth.

BTW that's amazing on your RES success...congrats!


Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

[Linked Image from i1261.photobucket.com]


Re: Sexing Redear Sunfish?
Shorty #359784 12/11/13 09:31 PM
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...and redears, of course, on the left.

Top left is the female RES
















Re: Sexing Redear Sunfish?
ewest #359826 12/12/13 12:20 PM
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Thanks Eric!

I was really hoping for something like "scale tipping" or the lack of as a good indicator of sex. Three of my aquarium RES have yellow fin tinting underneath just like the picture in your signature. The other two have dark fin tinting like the male and female RES picture you posted, they are also noticably overall darker than the other three. I think I have two males and three females but I wouldn't bet the farm on it.



Re: Sexing Redear Sunfish?
Shorty #359828 12/12/13 12:26 PM
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To be honest with you, I've always had significant reservations about the above photo. The fish on the upper left that's designated as a female RES, looks nothing like the females I've ever seen. I've always regarded that fish as a male that simply isn't in full spawning regalia. The eartab looks very "male" to me.


Holding a redear sunfish is like running with scissors.
Re: Sexing Redear Sunfish?
Bruce Condello #359872 12/12/13 04:47 PM
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Interesting, I wonder if the fin tinting underneath is indicative of sex in sexually mature RES? Females yellow, males black?



Re: Sexing Redear Sunfish?
Shorty #359873 12/12/13 05:07 PM
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We need some definitive photos of before and after.....filleting that is.

Otherwise it all seems interpretative, without a known starting point.


"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.
Re: Sexing Redear Sunfish?
sprkplug #359874 12/12/13 05:15 PM
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Good point! To complicate matters I wonder if RES have the equivalent of "cucks" and "sneaks" like BG do? grin



Re: Sexing Redear Sunfish?
Shorty #359875 12/12/13 05:23 PM
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Originally Posted By: Shorty
Good point! To complicate matters I wonder if RES have the equivalent of "cucks" and "sneaks" like BG do? grin





Crap, hadn't thought of that...

I will put some RES under the knife next opportunity that I get, and post the definitive photos.


"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.
Re: Sexing Redear Sunfish?
Shorty #359877 12/12/13 05:47 PM
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I'm going through my notes, but only found one photo with a positive female ID. I don't normally keep RES, but here's one where I did. Don't have any "after" photos as proof, but my records indicate the fish was filleted and verified. I will try for better photos, and before and after verification from now on. What do you think?

Female RES



"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.
Re: Sexing Redear Sunfish?
Shorty #359879 12/12/13 06:20 PM
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Tony, does the yellow color of the female stay fairly consistent year round?


AL
Re: Sexing Redear Sunfish?
Shorty #359882 12/12/13 06:37 PM
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I think so Al. My records show this fish was taken the last week of Feb. 2012, so It may even be a little washed out in this photo. This fish was 10", so it was mature.


"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.
Re: Sexing Redear Sunfish?
sprkplug #359883 12/12/13 06:40 PM
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Originally Posted By: sprkplug
I'm going through my notes, but only found one photo with a positive female ID. I don't normally keep RES, but here's one where I did. Don't have any "after" photos as proof, but my records indicate the fish was filleted and verified. I will try for better photos, and before and after verification from now on. What do you think?



Dark but yellow tinted fins underneath, I would have guessed male if the the red on the ear tab had been a lot larger.



Re: Sexing Redear Sunfish?
Shorty #359884 12/12/13 07:07 PM
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Shorty, what all do you see? When I study the photo, I'm drawn to the eartab's lack of projection onto the body, the narrow margin with what I would call an orange border, and the creamy light yellow area on the "belly". I always considered all three of those as female RES traits.

I do catch a fair number of BG x RES hybrids, but don't recall ever having taken any females in that regard. To me, this fish displays several RES markers, but I can't rule out any BG influence in there somewhere. But, unless I'm way off on deciphering my notes, this was a female.


"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.
Re: Sexing Redear Sunfish?
Shorty #359885 12/12/13 07:10 PM
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This a red ear electroshocked up at our place this last Spring. Male?


AL
Re: Sexing Redear Sunfish?
FireIsHot #359888 12/12/13 07:51 PM
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Originally Posted By: FireIsHot


This a red ear electroshocked up at our place this last Spring. Male?


Definitely a male.

I dropped off a 12 inch mounted female a couple of weeks ago at a bait & tackle store, which is one of my taxidermy pick up drop off points. Anyway there was a gentleman there that saw it and commented that the ear tab wasn't red enough. I had to tell him it was a female and the ear tabs on the females are more subdued than the males.


If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.






Re: Sexing Redear Sunfish?
Shorty #359889 12/12/13 08:13 PM
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Al that is a superb RES! And I would call it male also.


"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.
Re: Sexing Redear Sunfish?
Shorty #359890 12/12/13 08:27 PM
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Tony thanks, but I have to admit I'm clueless about red ears. IIRC, I had a 85/15 CNBG/RES order at least 8 years ago. I was surprised to see so many because I've never caught them. I'm doing something wrong.


AL
Re: Sexing Redear Sunfish?
sprkplug #359901 12/13/13 07:18 AM
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Originally Posted By: sprkplug
I'm going through my notes, but only found one photo with a positive female ID. I don't normally keep RES, but here's one where I did. Don't have any "after" photos as proof, but my records indicate the fish was filleted and verified. I will try for better photos, and before and after verification from now on. What do you think?

Female RES



I went to sleep thinking about this photo, and woke up still dwelling on it. It's listed as a female RES in my notes, but it just doesn't look right.

There's surely some BG in there.


"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.
Re: Sexing Redear Sunfish?
Shorty #359902 12/13/13 08:34 AM
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Body shape, coloring? Just looking at the pics, it seems like the confirmed adult RES backs drop straight down behind the dorsal fin, which makes the tail look longer than a BG. Bear with me on this, I'm taking baby steps.


AL
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