[RML] Gertrudae and flavours thereof

finsen at optusnet.com.au
Thu, 13 Jan 2005 09:02:41 +1100

Hi Julie,

I keep two different strains of P.gertrudae, one from the Olive River on the east coast of
Cape York and the second from Kennedy Creek near Cardwell on the northern
Queensland east coast (south of Cairns).

Both "flavours" are quite different in terms of finage (the Olives have larger overall
finage), colour (the Olives have more orange, the Cardwells are more "spotty") and size
(the Olives grow about 25% larger).

Then again I have seen the Weipa gertrudae (on the west coast, slightly more south
than the Olive River) and they are different yet again, similar in size to the Olives but
lots of orange on the pecs, lots more yellow over all, and lots more spots.

These sorts of morphs seem to exist in almost all rainbowfish, blue eyes and even
some gudgeons (from my personal observation).

I personally have only seen a couple of different morphs of tenellus as they pass
through my hands at ANGFA Qld auctions, and as such I cannot really comment on
these sp. But gertrudae do exibit wide regionally variations, but none that causes a
viewer to think that it is not a gertrudae (ie/ they all are about an inch and look like a
yellowy spotty blue eye).


PS: Those cardwell fish are tough! They can withstand Brisbane winter conditions
(down to 0 degC on the odd occassion with frosts) and breed like crazy. Not bad for a
little beasty who is from about 1200km away from home!

> Julie Zeppieri <bowluvr at hotmail.com> wrote:
> Hey Gary,
> So with them coming from Indo, with no known source location, the
> million
> dollar question is: Are they worth keeping? I know it really DOES
> matter for
> many Bows, such as trifasciata to name an extreme example, but how
> important
> is it with tenellus and gertrudae? I know some Blue-Eyes have very
> distinct
> populational differences, and my guess is that others are more
> restricted so
> do not. Where do these 2 species fall?
> Thanks! :-)
> Julie <><
> >From: Gary Lange <rainbowfish4u2 at yahoo.com>
> >Reply-To: r_m_l at yahoogroups.com
> >To: r_m_l at yahoogroups.com
> >Subject: RE: [RML] P. tenellus
> >Date: Tue, 11 Jan 2005 11:11:13 -0800 (PST)
> >
> >I guess the question to start with is: Who is calling them the
> rainbowfish
> >study strain? That might give us a clue. Put up a URL if a pic is
> posted
> >somewhere. Via our friend Ron Bowman in Oz I brought in quite a few
> >strains and got them into the hands of people that I thought might
> actually
> >keep them around. Roy Hunter brought in a few strains too but I think
> most
> >of those were quickly lost as they just ended up going just out to the
> >market. Also your question about tenellus Rarefish at LAX on Aquabid
> often
> >sells tenellus. They come in from Indonesia as they are raising them
> away
> >from NG now and shipping in. Same with gertrudae. Unfortunately no
> known
> >source. BTW this fish really needs a good source of live foods. I
> would
> >recommend not keeping them unless you're prepared to keep daphnia to
> feed
> >them along with extras of mosquito larvae and perhaps blackworms.
> Live
> >baby brine, really doesn't cut it but will do from time to time. They
> also
> >appreciate water ~ 100 ppm in the GH
> > scale and a tad bit of Tetra black water tonic (or peat water
> extract).
> >That really helps to keep them happy.
> >
> >gary lange
> >gwlange at mindspring.com
> >
> >Liz Wilhite <liz_wilhite at hotmail.com> wrote:
> >While I'm asking the impossible... does anyone know the river that was
> the
> >source of the M. duboulayi that is known as the rainbow study group
> strain?
> >
> >Liz
> >
> > >
> > >If you find one, Liz -- let us all know...
> > >
> > >Kevmo
> >
> > > Does anyone know of a source of P. tenellus in the USA?
> > >
> > > Thanks,
> > > Liz
> > >
> > >
> > >
> > >
> >