When I was in my LFS, I came across red rosy tank and I spotted a mosquitofish in the tank. I thought that the mosquitofish were "she" because of the sizeness, it was just 2 inch long. Then I discovered that it turn out she is he! I never seen big male mosquitofish before, I always got 1 1/2 inch long males.
Is that normal for male mosquitofish reach more than 2 inch long? I add him to my "feeder" mosquitofish females colony for his good genetics.
Size for mosquitofish males?
Started by
Guest_butch_*
, Sep 18 2008 09:51 PM
4 replies to this topic
#2
Guest_Fayettevillian_*
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Posted 19 January 2009 - 01:59 PM
When I was in my LFS, I came across red rosy tank and I spotted a mosquitofish in the tank. I thought that the mosquitofish were "she" because of the sizeness, it was just 2 inch long. Then I discovered that it turn out she is he! I never seen big male mosquitofish before, I always got 1 1/2 inch long males.
Is that normal for male mosquitofish reach more than 2 inch long? I add him to my "feeder" mosquitofish females colony for his good genetics.
I haven't seen any quite that big, but close. I'm pretty sure some livebearers can switch gender, in which case the fish could have started as a female then decided it was transgender...
#4
Guest_fundulus_*
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Posted 19 January 2009 - 04:41 PM
One of the first cases of "intersex" fish was described in Gambusia from a creek system in the Florida panhandle in 1983 (I think), with Mike Howell as the lead author. This creek had paper pulp mill effluent pollution which contains some chemical(s) that can masculinize female fish. Virtually all of the several hundred female Gambusia from downstream of this mill examined by the authors had developed gonopodia, although few seemed to be functional males. So it can happen as the result of some chemical exposure.
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