Captive bred fish in general still keep the ancient potential inside, except
for very high bred mutants like black angelfish or lyrateil forms etc. A
bubbleeye goldfish won4t make it long, sure. But a Danio will most prabably,
and a bluehead shiner as well.
Steffen
> Von: Jeffrey Fullerton <tcmajorr_at_westol.com>
> Antworten an: nanfa_at_aquaria.net
> Datum: Sat, 20 Sep 2003 11:00:34 -0400
> An: "nanfa_at_aquaria.net" <nanfa at aquaria.net>
> Betreff: Re: NANFA-- Bluenose shiner news
>
>> If we released aquarium fish like zebra
>> danios back into the wild they would not necessarily compete like their
wild
>> cousins.
>>
> Are you sure about that?
> The bane of invasive exotics suggests otherwise. Most species are fairly
> flexible and can adapt to conditions that are different than the
> origional biotype. If it's a fish that comes from an isolated spring or
> pool and that habitat was reclaimed and restored to a healthy state
> chances are good that the population would rebound and eventually revert
> back to the origional form just like goldfish revert back to the drab
> wild type when they become established in the wild.
>
> As for artificial refugia- it would not be that difficult to build them
> or reclaim old barrow pits and quarry holes and introduce species that
> live in still water habitats. You could maintain lots of viable
> populations that way. Actually they would maintain themselves pretty
> much. This is sort of like a colony tank approach that I read about in
> an recent issue of an aquarium magazine. A much larger population that
> most captive breeding programs using glass aquariums and random mating
> which maintains a greater degree of genetic diversity.
>
> There was a project started in Illinois that I learned about at the 1999
> Convention at Champaign-Urbana where a refugium was created using two
> ponds which were cleared of existing fish life- mainly staple stocked
> fishes like blugills etc and restocked with some state listed species-
> two shiners, Iowa Darters and Western Banded Killifish. It's been a
> while so I think I will follow up on the progress of that project and
> report back to the list.
>
> Jeff
-
> /"Unless stated otherwise, comments made on this list do not necessarily
> / reflect the beliefs or goals of the North American Native Fishes
> / Association"
> / This is the discussion list of the North American Native Fishes
Association
> / 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
> / nanfa-request_at_aquaria.net. For a digest version, send the command to
> / nanfa-digest-request_at_aquaria.net instead.
> / For more information about NANFA, visit our web page,
http://www.nanfa.org
/-----------------------------------------------------------------------------
/"Unless stated otherwise, comments made on this list do not necessarily
/ reflect the beliefs or goals of the North American Native Fishes
/ Association"
/ This is the discussion list of the North American Native Fishes Association
/ 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
/ nanfa-request_at_aquaria.net. For a digest version, send the command to
/ nanfa-digest-request_at_aquaria.net instead.
/ For more information about NANFA, visit our web page, http://www.nanfa.org