The Fish Speakers didn't seem to be that unfeminine. I beg to differ. Admittedly, FH did originally describe them as beautiful, but some of the very same women he described that way, he later described as being as-big-as-houses, and I'm not talking fat, I'm talking sheer muscles, so much so that Duncan, the warrior that he was, was intemdiated by them. Nayla is the perfect example of this. So, HB seemed to be inconsistant there, and in the end, he showed them (the Fisherspeakers) becoming more and more man-like throughout the story: bigger, tougher, more agressive. Yes, they had kids, but I wouldn't call what they did marrying and settling down. It was constantly referred to as "breeding". The notion of a family life was out the window. The only exception to that was, as you said, the previous Duncan. Oh, and Hwi. Yes, she was very feminine, but do you notice how that trait, that nature, was suppose to be used to bring done Leto, and with him, all of society? (Leto had society hard-wired so that his death would spell disaster if it came before he "evolved" to a certain point).