>On Thu, 6 Feb 1997, Bruce Hansen wrote:
>> I am just thinking of the RF Blue-eyes and the rather low success rate that
>> seems to be evident in maintaining high fertility on-going vigorous strains
>> in captivity.
>
>Is it genetic or environmental? :-) It's a hard question to answer
>seeing we have no genetic information at all.
I wonder if any one has tried to simulate the daily temperature change
with this species? Say possibly putting the tank in a cold location
and having the heater on a timer to kick the water temperature to a
high level for a few hours each day. Does it appear there is a lack of
spawning activity and eggs, or a lack of fertile eggs? If its a lack
of spawning activity then folks need to search for a trigger.
Or maybe they just need a few dambusia to beat up to get them in the
mood:~)
Cary Hostrawser
Minnesota Aquarium Society
http://www.mn-aquarium.org/
Rainbowfish Study Group of North America
http://home.earthlink.net/~sbuckel/index.html