I LOVE it!! Go Zarin! I would not have believed that they would mate while standing on their heads :-) And I love the handstand Zarinatsu does at the end! This is a great video. It makes me wonder what all they do when you are not there filming?? :-)I hope Zarinatsu will have eggs soon. But I wonder if you will have to buy a new aquarium with sooooo many crawfish?