My male is very particular and doesn't like my husband too much. He tends to sulk in a corner and stare at my hubby, and take his sweet time coming to the top for is food. But with me, almost as soon as he sees me, he's out and swimming around, or zooms to the top when I lift the lid.
My female seems to like both my hubby and I, but flares at my hubby a little more often than she does at me. Also, she will jump if I take too long feeding her or if I have my fingers near the surface when I'm cleaning. She has actually jumped completely out (I believe chasing one of the millions of fruit flies infesting our house at the time) and spent at least a half an hour of the water.