Re: snacking viejetas

[Mike & Diane Wise <apistowise@fgn.net>]

John,

I don't know if I have an answer for this. Dead, unfertilized, eggs usually
fungus very quickly, even in soft & acid water. In fact in blackwater areas
fungi do most of the organic decomposition that normally is done by bacteria in
more bacteria-friendly waters.

It does appear that your eggs were fertile but something stopped their
development. I can think of 2 possible reasons. One is that something in the
water or the tank have poisoned the developing larvae. This could be metals,
like my zinc example with trout, or some organic compound. The other possibility
is that your 'pair' are not the same species. Crossing very different species
commonly produces nonviable offspring. Sometimes this occurs as infertile
spawns, but can also be seen in arrested fetal development.

Mike Wise

John McCrone wrote:

> Hi Mike - you might have the answer for this.
>
> I pulled 10 remaining eggs when the mother started to eat them and put them
> in a breeder trap in the same tank. None of the eggs developed (none
> fungused either). But a few grew into those sausage-shaped masses of pink
> tissue that I've always assumed to be mal-formed embryos.
>
> Do you know if this means the eggs were fertilised? I assumed that they must
> have been to get the eggs developing at all, but with fish I don't really
> know.
>
> Cheers
> ------------------------------------------------------------
> from John McCrone
>
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