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What's Your Definition Of F0/f1/f2 Etc?
April 30, 2011
8:58 pm
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poshsouthernbird
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February 11, 2011
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Evening all /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> This has come up elsewhere before and I thought I'd got the definition sorted in my own mind but it seems it's not quite as clear as I thought so I'm hoping for some more info from more experienced fishkeepers. I was led to believe that, as far as breeding from wild caught fish is concerned, F0 refers to the wild caught pair, F1 to the first generation offspring, F2 to the offspring of the F1 and so on and so forth.

I've since seen wild caught referred to as F1 on the grounds that these are the first generation in captivity. F0 isn't used.

I believe there are a few 'takes' on F0/F1/F2 etc. when referring to hybrids and line breeding/crossing of various generations and have found an article which seems to explain it in a reasonably straightforward fashion here. But as ever with the internet, who do you trust /wink.gif" style="vertical-align:middle" emoid=";)" border="0" alt="wink.gif" />

I know there are several members here who breed from wild caught fish - if anyone would be kind enough to explain how they would define a wild caught pair and their offspring I would be very interested /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

Cheers, S.

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May 1, 2011
5:25 am
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Colin
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The F system changes depending on its context, like you said.

Wild fish are fish that have physically came from the wild with no human interference. F0 is sometimes used but not really accepted...

F1 with regards to fry from wild caught parents are the first generation in captivity

But F1 could also be anything that I have spawned for one generation, even if they are 100 generations removed from the wild.

It's all a bit subjective and needs extra info provided at the time.

/smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

May 6, 2011
10:10 pm
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poshsouthernbird
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Hi Colin, thanks for that, always good to hear from someone with personal experience /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

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