Size difference in siblings

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Size difference in siblings

Post by Aura on Tue Jan 05, 2010 11:29 pm

Can you believe that these two flavus came from the same spawn? That little runt has not grown while the others are much bigger now.





No one messes with it, but I don't think it was meant to be.
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Re: Size difference in siblings

Post by bulldogg7 on Tue Jan 05, 2010 11:38 pm

wow! I've got some runts but nothing with that big of a difference Shocked
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Re: Size difference in siblings

Post by Rift_Lakes_Rule on Wed Jan 06, 2010 6:25 am

That's amazing Shocked

Wonder if it'll ever get any size. I've never had one that was that much smaller than the rest either.

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Re: Size difference in siblings

Post by theswede on Wed Jan 06, 2010 7:18 am

Wow, that´s a hugh difference. Shocked Never seen that kind of difference before.
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Re: Size difference in siblings

Post by Emma on Wed Jan 06, 2010 9:55 am

I have some that are way diffrent in size, not qite that extreme.
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Re: Size difference in siblings

Post by Super Turtleman on Wed Jan 06, 2010 11:47 am

That is definitely strange. You should update us on it if it grows....or if it doesn't. Maybe it's dwarfism?
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Re: Size difference in siblings

Post by Aura on Wed Jan 06, 2010 12:27 pm

I'll update if he survives, but I'd be surprised if he did. He's a little bigger than newly spit, but not by much. Surprised

I thought about separating him out and feeding him to see if he grows, but I don't know if I should do that because he's obviously got some sort of problem. At feeding time, all of the others rush to the top and wait for the food while he stays at the bottom. I know he gets some to eat, but not as much. Even though he isn't getting as much to eat, he should still grow at least a little bit. scratch
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Re: Size difference in siblings

Post by preacherboy on Wed Jan 06, 2010 5:28 pm

That is strange!
That's a lot of size difference!

Well, I guess sometimes nature works in strange ways.
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Re: Size difference in siblings

Post by iceblue on Wed Jan 06, 2010 7:00 pm

I had a couple of male Rusties that showed the same type of size discrepancy. They were both about an 1 1/2" when I got them but one of them didn't seem to want to eat when everybody else was pigging out. It grew maybe another 3/4" but was still half the size of the other. I had always thought that it had some type of problem swallowing. It seemed to wait around looking for smaller tid bits.
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Re: Size difference in siblings

Post by Micheal on Wed Jan 06, 2010 11:10 pm

I have few fish with some size differences but nothing like that. In nature I'm sure that one wouldn't have survived this long.
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Re: Size difference in siblings

Post by cichlidman on Wed Jan 06, 2010 11:23 pm

I think normally most breeders would cull the tiny one.

It is done naturally in the wild.

That is a huge difference.

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Re: Size difference in siblings

Post by football mom on Thu Jan 07, 2010 11:17 am

I put some Obliquidens in my 90 gal, they were about 3/4 to 1 inch, one of them is twice the size of all the rest, and on one of them hasn't grown at all. The others are all about the same, bigger than when they were put in there, but all growing at about the same rate.

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Re: Size difference in siblings

Post by Chrisg12887 on Thu Jan 07, 2010 10:23 pm

i have this issue too! i have three yellow lab juvies all from the same spawn and two of them are 2 inches while the other one is about one inch.....weird
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Re: Size difference in siblings

Post by danish3210 on Mon Feb 01, 2010 7:37 pm

I saw the size difference in my old tank too. I blame it on recessive Gene, It show up in some of off spring.

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Re: Size difference in siblings

Post by Aura on Mon Feb 01, 2010 7:50 pm

That little thing is still about the same size and now one of the females in that brood is holding already. I don't know why the other fish don't bother with it.
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Re: Size difference in siblings

Post by football mom on Fri Feb 05, 2010 8:50 pm

I have some Obliquidens with big size differences, too. There's one that's HUGE, and the others are pretty much the same. There's one that doesn't seem to be growing much at all. I guess it's just genetic variation. I am interested in whether the really giant juvie turns out to be male, though.

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Re: Size difference in siblings

Post by Larry Johnson on Sat Feb 06, 2010 3:46 am

Aura, in the wild you would only expect 2-3 fish out of each spawn to grow to maturity, so these smaller sized fish would surley be eaten,,,
its a "grow big,fast,,,or be eaten" deal.
Nice pictures!
What are you using these days for a camera?

Cheers,Larry
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Re: Size difference in siblings

Post by Aura on Sat Feb 06, 2010 11:45 am

Thanks Larry. I took these pictures with my old Canon PowerShot A540. I've also been using a Nikon D60, but it requires camera smarts that I don't have. Very Happy
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