Are They Fighting or Mating?

With our school studies in recess over the last week, the hullaballo has been over our big bug tank. The two praying mantis are checked frequently, as we watch them catch their prey. What we are also noticing, is that they are beginning to interact with each other.

It is a slow approach, but gradually one will approach another. Once we did see what seemed to be an attack when one mantis got too close to the other. However, after more research, I'm beginning to think we have a male and female, and what we are seeing is possibly the initial signs of courtship.