I have never owned a pair of anything however I picked up a small picasso about a week ago and have had a large one in my tank for a month and a half to 2 months. Anyway they seemed to get along swimingly immediately. This morning I turned on the light and found him hanging out in one of the nem's but I couldn't find her anywhere (making some assumptions here). I have a large concave capstone on top of the rocks which makes a nice little swim through/cave anyway its a little dark under there but I find her kind of upside down swimming under there with her belly against the ceiling of the rock and even when I fed the tank she didn't come out. Is this spawning behavior?
theres an anemone stalk in there so maybe thats why she seems to be fine no swim bladder issue that I can tell.