Re: NANFA-L-- Esox Gender Determination

Mark (
Fri, 28 Jan 2005 13:18:42 -0500

At 2:47 PM -0500 1/28/05, wrote:
>In a message dated 1/28/05 2:35:40 PM, writes:
>Does anyone have access to adult Esox americanus that would like to
>try this method on them? >>
>How adult is sufficient? I have one that is about 8 inches long but I doubt
>that I can hold him/her long enough to see. Maybe I can take a digital picture
>from beneath the glass bottom tank.

That sounds pretty adult. But be careful. I once killed a pickerel
I had had for a long time, by restraining it too tightly in my hand.
It tensed up and went into shock or something. I didn't squeeze it
tight enough to crush it, just to prevent it from wiggling. I must
have hit a nerve or something. Anyway, I put it in the tank, and it
was totally limp, basically dead-in-that point.

Conejo Creek drainage
California USA

<))>< /----------------------------------------------------------------------- / This is the discussion list of the North American Native Fishes / Association (NANFA). Comments made on this list do not necessarily / reflect the beliefs or goals of NANFA. For more information about NANFA, / visit Please make sure all posts to nanfa-l are / consistent with the guidelines as per / To subscribe, / unsubscribe, or get help, visit the NANFA email list home page and / archive-in-