fish fight

I can't tell if the parrot fish are fighting or kissing when they do this. It does look more like headbutting than anything romantic, but who's to say?

(They're called Alfie and Harry. I've no idea which is which. We had parrot fish at home, years ago- now returned to the fish shop because they're too big- called George and Henry, so we thought we'd keep the English Kings theme going.)