RE: [acn-l] NANFA-- endangered fishes Re: nanfa V1 #165 (fwd)

Danny.J.B.Walker (reklaw01 at cobweb.com.au)
Tue, 16 Feb 1999 12:35:21 +1030

hi
as a not a very well educated person I would have thought that to start a
captive breeding program it would be compulsory to use new equipment such as
tanks ponds and filters to combat any unwanted disease and to fight
inbreeding follow ACN book of Guidelines for Captive Breeding Programs as it
covers using from using 1 pair to 50 pairs(or has it been banished for some
reason or other?)maybe Helen could confirm this for me but I'm led to
believe that sometime during the first 50 years of the 20th century
C.eremius where translocated to a lot of bores through the South Australian
desert and are doing really well in their new homes Im sure that would serve
a good thing for the Elizabeth Springs Gobie or any other small desert fish
in trouble but they should be put in wells & bores in their own area maybe a
certain radiance from the original capture sight.
As its been mentioned that M.eachamensis has little colour but now are in
their 1000's due to the fact of being extinct in the wild. Im sure the other
colourless fish would get a strong following from people to breed them for
captive populations like the rainbow has now hobbyists would feel they did
something to save it just as ANGFA does with the Bow. They may be lost to
Lake Eachum but not lost forever thats got to count for something.
As to no one other than hobbyist keeping small natives in Australia I have a
feeling Native Fish Australia have a progeram for the Murray River Hardyhead
as wellas being involved in construction of a sight for Galaxias fuscus and
are looking at doing something for the Mogurnda adspersa from
Cardross Lakes but they wont start nothing because the powers that be say
there is not enough fish left in the wild to warrant it as only 5 specimens
have been caught I would have thought all the more reason to start program
even if from only one pair following ACN guidelines(is this book
still available it is very good reading I know it was being revised a few
years ago did it get released????) as already mentioned EXTINCTION is
FOREVER
as Peter would know for some reason aquatic science fisheries in this great
state are for some reason against hobbyist doing any thing with native fish
here yet they dont do any thing for them
either unless they get paid or it has a comercial value nothing against
anyone personally but we have the worst run fisheries in the country.
Happy Fish Watching
Danny Walker

S.A.N.F.A. Advancing South Australian Aquatics <*\\\><

> -----Original Message-----
> From: owner-acn-l at pinetree.pinetree.org
> On Behalf Of
> peter.unmack at ASU.Edu
> Sent: Monday, 15 February 1999 4:59
> To: acn-l
> Subject: [acn-l] NANFA-- endangered fishes Re: nanfa V1 #165 (fwd)
>
>
> Forwarded from the nanfa list
>
> ---------- Forwarded message ----------
> Date: Sat, 13 Feb 1999 20:55:04 -0500
> From: bockj <bockj at erols.com>
> Reply-To: nanfa at aquaria.net
> To: nanfa at aquaria.net
> Subject: NANFA-- Re: nanfa V1 #165
>
> I'm on the digest, and don't receive these messages individually.
> You guys
> have definitely put out a lot of food for thought.
>
> Regarding the propagation of endangered species in home aquariums:
>
> This is a difficult situation with no easy answers. Captive breeding
> presents problems. The first is introduction of disease. Who knows what
> bugs your newly acquired captives might pick up from your home tanks.
Even
> though you may have them in species-only tanks, bacteria, viruses, and
> whatnot might be lurking in the gravel or filter sponge, left
> over from the
> tank's previous inhabitants. Who knows what they might do to your new
> acquisitions? And even if they don't do anything to your new
> acquisitions,
> they might lie dormant in these fish, and wreak havoc on some
> other species
> in the wild.
>
> Also, there's the problem of inbreeding. Basically, if you keep a
> population together, and don't introduces any new fish, they get inbred.
> And then there's the problem of outbreeding. If you try to prevent
> inbreeding by bringing in captives from some distant location,
> you might be
> impairing the genetic capacity of your original fish to survive in their
> original habitat (if it's still there).
>
> Still, if you receive fish from a place where there's no effort or thought
> whatsoever to prevent their extinction, it makes sense to breed them,
> because, as someone pointed out, there's no alternative to extinction.
>
> I'd like to call for volunteers. You scientific types: can one
> of you (or
> several of you) put together a document that non-academically trained
> aquarists can follow if one of these threatened or extinct-in-the wild
> species ever comes our way? (Has another club prepared such a document?)
> Jay DeLong's article on Salmon breeding is a first step toward
> accomplishing this, but we hobbyists need something more specific and
> tailored to our situation.
>
> While you're at it, you could probably take over NANFA's
> endangered species
> breeding program, which has been crying for someone to take it over for a
> long time.
>
> Best Fishes,
> Bob Bock
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