I think its quite dependent on the situation, – and Stefanie asked about the behaviour in tanks with one sex only.
I definitely see very strong dominant behaviour with females if theres a male in the tank. To the point of really bullying a female. Today I just caught out a female of a p.harveyi tank where there were two females. The dominant female has already one little fry swimming around, and she is always happily going at the front glas, close to the male, which is in or around the cave – but the second female .. she has lived a life in the back of the tank so that I hardly new she was there,and if she dared peep out both male and the other female were after her. But she survived – it doesnt go to that extreme, – but she is not allowed to where she likes 🙂
I put her in the tank I mentioned above with the two males 😉
And yesterday I saw two female quindecim really in a quarrel, really ‘agression’ colours towards each other, and very ‘dominant and sub-dominant’ behaviour between the two.
But thats when theres a male around.