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Re: GAR breeding and Barometric Pressures
On Sun, 25 Jun 2000, Wright Huntley wrote:
> There *is* an effect with humidity in stormy weather that may make Bettas in
> poorly-covered tanks find bubble nests last longer. Again, mine are tightly
> covered so I just never observed that one either. In poorly-covered killy
> tanks, higher humidity can reduce evaporative surface cooling, so might
> influence top minnows in that way, IDK.
>
Wright,
I have noticed that, at least in Riv. agilea, a massive water
change woudl induce spawning (provided that the fish were mature and
conditioned well) within 24 hours. Several variables do change with the
water change, temp (usually drops a few degrees), nitrogenous wastes,
other mineral concentrations in the water all drop a bit. Of course this
was while I was feeding a lot of artemia napuli and none to careful aout
excess salt getting into the tanks. I would expect that these factors
would all change folowing a thunderstorm (assuming increased rainfall). I
would susect that these factors all have some influence in the
syncronization of reproduction and the suitability of the habitat.
mtf
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