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
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> /"Unless stated otherwise, comments made on this list do not necessarily
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/-----------------------------------------------------------------------------
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/ 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