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Re: New fish spawning.
Hi Tim and all,
Tim Addis wrote:
> Hi Wright - we had the moense in the BKA in the early '70's I think. I
> believe they were called A.sp.K3 or the Mountain Aphyosemion. This
> collection were caught in a mountain stream in a forested area. Water temp.
> 23.2C, pH 5.8, DH below 1.
> Aphyosemion I have found regularly spawn large amounts of eggs after getting
> them home from an auction. The percentage of these going on to hatch can
> however be small. Hope you get a good hatching.
Out of 60+ eggs, I can see only 4 healthy babies, right now, and there may
be a few more in the Java moss. I, too, got a really poor hatching, but it
beats losing the species. :-)[Now watch. All males!]
From your numbers, it is possible I didn't have the calcium low enough. That
seems to be a problem with soft-water Aphyos. It inhibits hatch, as far as I
can tell. My water just measured 330 ppm, and 2/3 of that is real hardness.
That would be about 12-13 DH, I think (depending on whose units). Grrr!
Even if I had gotten the water right, the hatch could have been poor,
anyway. So far I'm pleased that I have any.
This raises a question. Sudden lowering of tds (osmicity) can quickly kill
most fish. They must have time to adjust their osmoregulatory system or
cells burst in skin and gills. Is there a comparable thing in eggs? IDK how
eggs regulate osmosis. Would they be inclined to burst or be damaged if I
take them directly from 300 ppm tank water to 20 ppm RO water for gestation?
Wright Huntley, Fremont CA, USA, 510 494-8679 huntleyone at home dot com
"DEMOCRACY" is two wolves and a lamb voting on lunch.
"LIBERTY" is a well-armed lamb denying enforcement of the vote.
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