The fish, smallmouth and largemouth bass, were male but nevertheless carried immature eggs.
Women are born with millions of immature eggs, which are contained in multicellular structures called follicles.
Peter Griffiths interpreted them as immature eggs in 1993.
It is not generally considered edible, although there are reports of the immature 'eggs' being consumed.
He has had much better success with immature eggs, in which the chromosomes are compacted into a sturdy ball.
During an egg-retrieval operation, the surgeon could take immature eggs from a woman's ovaries along with mature ones.
The immature eggs - there are generally about 10 in each ovary - could then be frozen for use later if necessary.
The immature eggs are passed in the faeces.
The immature eggs that has not developed the eggshell yet are boiled and put into skewers to be grilled as satay.
They are worth so little that many are incinerated, their immature eggs unharvested.