And in a lot of sea fish they change sex as they grow older. Starting as males and then turning into females. With certain species of wrasse there is one female, when she dies, one of the males changes sex to replace her.
That may explain a lot of the strange people on this Forum
I remember some news article a while ago about pollution making lots of fish either change sex or have extra female internals (could have been about samon)don't seem to hear anything about that now ?
If the trend I had read about is to believed there is a generall shift towards more female creatures because of all the female hormones floating about from pollution so since carp are in the water I would guess there are more females than males.
I used to try and breed lizards and is was well know that one degree out when incubating the eggs would result in all female or all male brains regardless of actual sexual organs I think it was leapard gekos that it was most common in .
They would spend there whole lives thinking they were male even trying to mate with real females .
I think this could be the case with some humans .;bp