Rainbowfish Mailing List Archive: Re: [RML] Pseudomugil cynadorsalis Melanotaenia pygmae

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Re: [RML] Pseudomugil cynadorsalis Melanotaenia pygmaeDave & Bruce
Thanks heaps for your info, helped me out lots :-)=20
Danny Walker

-----Original Message-----
From: Dave & Robyn Wilson <rwilson at octa4.net.au>
To: rainbowfish at pcug.org.au <rainbowfish at pcug.org.au>
Date: Friday, 1 June 2001 1:22
Subject: Re: [RML] Pseudomugil cynadorsalis Melanotaenia pygmae

Danny,
I will try answer some of that. I have collected Pseudomugil =
cynadorsalis in Broome as well as here in Darwin. I have never found =
them above tidal influence or outside estuarine creeks in the open =
ocean. They are very common in all the small tidal creeks around =
Dawin. These small creeks run fresh for three or more months per year =
during and after the wet season then gradually return to salt water =
after the rains stop.

Can anyone tell me if P.cyanodorsalis is found in any permanent =
freshwater, (land locked) or are they just seasonal bouts of freshwater, =
and are they also found in open sea areas or sheltered harbours and =
eustary.
Also is their colour enhanced by being in salty water?
What can I expect the life span in captivity is?

Their life expectancy at my place is very short because I feed them to =
baby mangrove jacks and small gudgeons. I have never kept them long =
term

In the creeks near here there are always millions of smaller specimens =
with very few larger models among them, so assuming them annual is =
probably reasonable. They are not in a very safe position in the food =
chain. There is a magnificent little algae eating shrimp from the Atyid =
family among them, the shrimps convert to fresh and will clean up an =
algae problem in a planted aquarium very quickly.

In our shop I have some in a very small display tank with 50/50 =
brackish and they colour pretty good in the natural sun light.=20

I don't think there is a need to be rigid with your salinities because =
they get fluctuations where they live.

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Re: [RML] Pseudomugil cynadorsalis Melanotaenia = pygmae

SANFA          = ;           =20 http://www.sanfa.org.au/
ANGFA&n= bsp;           &nb= sp;        =20 http://www.angfa.org.au/
ANGFA=20 QLD           &nbs= p; =20 http://home.telebel.de/nogrunw
Aggies=20 Aquariums       Serving Adelaides Native = Fish=20 &           &n= bsp;           &nb= sp;           &nbs= p;            = ;            =       =20
           &nb= sp;           &nbs= p;          =20 Amphibians Needs
(08) 8359 - 7099 ph/fax  =20
0416-226-512 mob/SMS
reklaw01 at bigpond.com
<= /DIV>

-----Original = Message-----
From:=20 Dave & Robyn Wilson <rwilson at octa4.net.au>
T= o:=20 rainbowfish at pcug.org.au=20 <rainbowfish at pcug.org.au>Date:=20 Friday, 1 June 2001 1:22
Subject: Re: [RML] Pseudomugil=20 cynadorsalis Melanotaenia pygmae

Danny,

I will try answer some of that.   I have = collected=20 Pseudomugil cynadorsalis in Broome as well as here in Darwin. I = have=20 never found them above tidal influence or outside estuarine creeks in = the open=20 ocean.   They are very common in all the small tidal creeks = around=20 Dawin. These small creeks run fresh for three or more months per = year=20 during and after the wet season then gradually return to salt water = after the=20 rains stop.

Can anyone tell me = if=20 P.cyanodorsalis   is found in any permanent = freshwater, (land=20 locked) or are they just seasonal bouts of freshwater, = and are=20 they also found in open sea areas or sheltered harbours and=20 eustary.

Also is their colour = enhanced by=20 being in salty water?

What can I expect = the life=20 span in captivity is?

Their life expectancy at my place is very short because I = feed them=20 to baby mangrove jacks and small gudgeons. I have never kept = them long=20 term

As I guess they would = be pretty=20 well annual in the wild.

In the creeks near here there are always millions of smaller = specimens=20 with very few larger models among them, so assuming them annual is = probably=20 reasonable.   They are not in a very safe position in the = food=20 chain. There is a magnificent little algae eating shrimp from = the Atyid=20 family among them, the shrimps convert to fresh and will clean up an = algae=20 problem in a planted aquarium very quickly.

In our shop I have some = in a=20 very small display tank with 50/50 brackish and they colour = pretty good=20 in the natural sun light.

I don't think there is a need to be rigid with your salinities = because=20 they get fluctuations where they live.

Cheers

Dave

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