Prost,
Martin
Jackson, MS
Quoting Steffen Hellner <steffen_at_hellner.biz>:
> Why didn4t I remember this striking example for extiction by
> qvercollecting!;-) This it was stated in very first reports about the
> extinction. Well, the opponents of pet hobby fire quick from the hip. Much
> later it was claimed damming as the true reason.
>
> I am in contact with a commercial fish importer who has started research on
> hormone induced breeding in several species (e.g. Synodontis-catfish) to
> become independent from imports.
>
> And for overcollecting in general: even the Neon-Tetra which is collected in
> numbers of as much as 600 Millions every year doesn4t show any effect from
> this in its population density. But there are decreasing collections of
> Hypancistrus zebra due to overcollecting. But the fish won4t get extinct by
> this anyways as it is a species living in very deep water where even
> professional dive-collectors don4t like to get. The Amazone at manaus is
> more than 60 m deep. The Rio Xingu were hypancistrus lives nearly as deep.
>
> Still waiting for evidence that collecting of fish or any other cold-blooded
> animal has ever lead to extinction.
>
> Steffen
>
> > Von: anutej_at_loxinfo.co.th
> > Antworten an: nanfa_at_aquaria.net
> > Datum: Mon, 12 Jan 2004 18:30:54 +0700
> > An: nanfa_at_aquaria.net
> > Betreff: Re: NANFA-- Collecting ethics
> >
> > As is the dwarf botia [Botia sidthimunki] so common in the hobby is
> > officially extinct [unless new survey sometimes in the future find
> > any] in Thailand now thanks to destruction of floodplain habitat and
> > creation of dams blocking the migratory route [development]. The law
> > comes out far too late and impact the breeding attempts so most fish
> > farms breed them "underground". Fortunately[?] officials usually
> > don't care much about hundreds of this loaches in shipping boxes
> > exported so the commercial breeding can continue.
> >
> > Tony
> >
> >
> > Steffen Hellner wrote:
> >>
> >> As coming from killis, maybe this is why I have developed my point of
> view.
> >> Many Cyprinodon and other pupfish (Crenichthys, Megupsilon, Cualac, the
> >> african Aphanius apodus) are extinct in the wild but still present in
> tanks.
> >>
> >> Many more are at the edge and will need backup as well. And even more
> will
> >> come to, soon. But I doubt there are enough people to stock them all.
> >>
> >> Steffen
> >>
> >>> Von: "Stan Perkins" <stanperkins_at_academicplanet.com>
> >>> Antworten an: nanfa_at_aquaria.net
> >>> Datum: Sun, 11 Jan 2004 23:41:53 -0600
> >>> An: <nanfa_at_aquaria.net>
> >>> Betreff: Re: NANFA-- Collecting ethics
> >>>
> >>> The sad side to this can be seen with killifish. Some species of killies
> are
> >>> not found in the wild anymore - just in tanks carefully bred and
> preserved
> >>> ready to be reintroduced, if - and that is a big if - the habitat is
> >>> restored. Since most of it is under concrete, I don't forsee this
> happening.
> >>>
> >>> Stan Perkins
> >> /"Unless stated otherwise, comments made on this list do not necessarily
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> -
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> > / reflect the beliefs or goals of the North American Native Fishes
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> http://www.nanfa.org
> /"Unless stated otherwise, comments made on this list do not necessarily
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/-----------------------------------------------------------------------------
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/ reflect the beliefs or goals of the North American Native Fishes
/ Association"
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/ nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word
/ subscribe, unsubscribe, or help in the body (not subject) of an email to
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/ For more information about NANFA, visit our web page, http://www.nanfa.org