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Re: [Killietalk] When is an egg really ready to hatch?
Wright,
My definition of eyed up is the same as yours... a full iris. The fry
in the photos I posted (in mpearlscott gallery of the AKA web site) all
show a full iris (and therefore meet this criteria). So by my
definition, they are eyed up. But at the same time, the yolk is aweful
large, and so my guess is that they are not truly ready (yet).
So in essence, I'm trying to narrow the definition to something like,
"having a full iris and very little to no yolk left." So maybe my
question is how much of the yolk do you normally see in eggs that you
consider ready to hatch?
In the past I haven't paid attention to how much yolk there was left,
but I'm thinking that it is a better indicator of the progress of
development than just looking for a developed iris.
Anyone have any thoughts?
Mark
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Mark Pearlscott, LMP
Treatment Massage, The Injury & Pain Relief Clinic
4500 9th Avenue NE, Suite 300-34, Seattle, WA 98105
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(206) 234-9929
"Assisting You to Wellness."
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Wright Huntley wrote:
*Mark Pearlscott <mark at pearlscott_com> wrote:*
All,
I've been wondering lately, when is an egg really ready to hatch?
Everyone says, when the egg is eyed-up, it is ready. But I wonder if
that is really true. The reason I am wondering is because I have some
eggs that are eyed up but have a significant yolk still. I know some
fish species hatch and the young fry have yolk attached to them as
they swim around. I'm just not sure that it is the case for killies or
annual killies.
Just how are you defining "eyed up?"
I usually consider a batch of eggs to be eyed up when over 2/3 of them
show not just a dark iris, but the full gold ring around the black
pupil. If the rings are not full width, all the way around, or show
breaks, they are likely not ready.
Of course, the best test of all is if you get a really good,
high-percentage, hatch of non belly sliiders. Looking back, you can then
say: "Those eggs were eyed up!" :-)
Wright
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