Hello - I haven't posted here before

I have a 500 litre pond, and the resident goldfish did not spawn until
recently after I added a significant amount of plants.

At the moment the babies vary in size from about half to three-quarters of
an inch.

The adults are about 4-6 inches in length and there would be about 10 of
them, nearly all are 'gold' fish, one is white, one is speckled, one is
black. Please forgive the non-expert descriptions.

Anyway, most of the young are black, a couple are gold.

My question is, what should I expect given that there seem to be about 50 or
more tiny fish in the pond? My concerns are over-crowding primarily.

I live in Australia - in case anyone is wondering why my fish are breeding
now.

Any information/advice welcome.


Kathy