Mantis dropping it's "punchers"

[Dez]

I've had this mantis shrimp for about 5 months now, it's about 6 inches long (yeah, it's a big one) and about 2 months ago he just decided to drop it's punching appendage. I didn't think anything of it, but it's been a couple of months and he hasn't grown any back. He used to punch the feeding stick, but for the past 2 month, he just swims up, takes the food and eats it.

This is the only fuzzy picture of him I have (I'd take another one but I'm at work and don't have my cord for the camera)



I'm certain he's healthy, I just miss the punching and showing friends what the mantis does.

Anybody have this happen to them before?