Koi eggs are generally not found floating out in the pond. The female is
pushed against the side of the pond, plant pots, plants, rocks, or whatever
is handy to help her expel the eggs. The eggs, at least once fertilized,
which is being done by the male during expulsion, are very sticky and will
be stuck to the plants, rocks, liner, pots or whatever. They are generally
a light amber color and cover everything. If the number of fish spawning is
fairly high, there will be a coating of milt on the surface of the water
that will be kind of whitish, and may be foamy. With high levels, it will
have a very definite aroma, the smell of sex. If the fish have been
spawning, there are very high levels of protein in the eggs and milt, and
this will lead to very high ammonia levels, so be sure to check for ammonia
and treat with amquel or similar. The ammonia will be taken care of by the
filter bacteria within a few days, but nitrites will shoot up, and it may
take weeks for them to come back down.
--
RichToyBox
http://www.geocities.com/richtoybox/pondintro.html

"Mike C" wrote in message
oups.com...
My Koi appear to be spawning. I've never noticed this behavior before
as they were probably too young. I found clear small balls floating on
the top of the pond in clumps. I removed them the second time I saw
them to a separate container (the first time I left them and they
appeared to be eaten). Are these fertilized eggs, or did I remove them
to soon? How do you know the difference between fertilized and
non-fertilized eggs?