Right now I am getting so many eggs I don't know what to do with them. I
have so many fry going that I am havint to start them in a 3 gallon
rubermaid container. The marine rotifers as food makes things really easy
feeding wise. I thihk can keep them in 100%, just not too sure if the eggs
will hatch under those conditions. I am begining to suspect that the eggs
and fry might prefer lower salinity and the adults higher (Same for the
ross river sigs). I was looking into setting up a 5.5 gallon tank for the
show. They made a small tank class and I figure I can minimize the problems
with this class because they have made it open, no regs beyond a size
maximum of 5.5 gallons. Then I can do a mixture of natural and unnatural
elements. I don't think the Ross Rivers will fit too well in this
situation. I was looking at about a dozen fish. some of the macro algae
might do well in brackish, (i.e sea lettuce) Just collecting it and
cleaning it up will be a chore.
Chuck was saying to me that sea salt wasn't enough. He found that
apparently the fish developed Mg problems. He found that addiditon of
epsomsalts or using the instant ocean mixes were necessary. So I am going
to see if this works with some fo the fry I am getting...
MTF
>Mach, I will bet that 25% seawater will be a very bad choice for
>cyanodorsalis!
> When I first got these fish from Charlels Nishahara (sorry about the
>spelling)
>some 8 + years ago they didn't live for very long at all. He had us putting
>them in something less than 1/2 seawater (4 Tablespoons/gal) and then
>alternating with lower concentrations. They didn't last very long at all.
>Same happened with the second batch also kept at low concentrations. I will
>bet that for long term happiness of the fish you are going to need higher
>concentrations. I think I remember that you were currently keeping them
>at 50%
>seawater? How many eggs are you getting per week, 50 or more per 6 fish? If
>you are only getting a few then they are already hurting. Are you going
>to try
>and mix them with your Ross River signifers? If you could keep them from
>beating on each other that would be a good display. Has anyone kept the
>cyanodorsalis in 100% seawater? That might be an easier way to go to find
>some
>macro algae that will grow with them. Some of that is supposed to be fairly
>easy to grow, haven't tried it though.
>
>Gary Lange
>gwlange at STLNET.com
>Rainbowfish Study Group of North America
>http://home.stlnet.com/~gwlange/rainbowfish.index.html
>
>
>----------
>> From: Mach Fukada <fukada at hawaii.edu>
>> To: rainbowfish at pcug.org.au
>> Subject: [RML] Decorating those ack brackishwater tanks (fwd)
>> Date: Friday, May 08, 1998 1:58 PM
>>
>> Hi Klaus,
>> Working on this one for the same reason. Earlier I had asked
>> about two plants, both of which occur naturally here in Hawaii, Halophila
>> sp. or Ruppia maritima, Apparently they tolerate highly saline brackish
>> water, but I have yet to find any info regarding their ability to adapt to
>> aquarium conditions. They also seem to need high ammounts of nutrients.
>> I was reading that Java moss and JAva fern can be adapted to 50% seawater,
>> it won't grow fast (or at all) but will retain its color and look decent.
>> I am going to see if I can get them to do well in 25% seawater. I was
>> hoping to do a planted brackish tank for our show in october. Seems like
>> it would be impressive to have a few dozen P. cyanodorsalis swimming
>> around displaying to one another...
>>
>> MTF
>>
>> ---------- Forwarded message ----------
>> Date: Fri, 8 May 1998 06:15:18 -1000
>> From: "Segeberger by way of Mach T. Fukada" <klaus.schoening at jungle.org>
>> To: fukada at hawaii.edu
>> Subject: [RML] Decorating those ack brackishwater tanks
>>
>> Although I love my Pseudomugils cyanodorsalis I am dissatisfied
>> with the way I have the aquarium decorated. I keep them at s.g. of
>> 1.017 and I would like to know if there are any plants and scavengers
>> that would survive and thrive in that environment. Artemia make great
>> snacking companions but I wonder if there are any snails that would do
>> well and scavenge in that environment and not be eaten by the fish or
>> vice versa.
>>
>>
>> Mach, are there any Hawaiian critters you have tried or any brackish
>> plants that work in this situation?
>>
>> I want to continue keeping them at that level of salt water. My
>> question is: those of you who keep this fish, how have you decorated the
>> aquarium? I bet there is someone out there with some novel ideas or
>> solutions to this dilemma. This is too regal a fish to live in the
>> austere surroundings I have given it.
>>
>>
>>
Mach T. Fukada, Web Master
fukada at hawaii.edu
Honolulu Aquarium Society
http://www.geocities.com/Heartland/Meadows/2948/HASF.html