Green Mandarin Goby

I wanted a female to add to my 90G reef tank. I have a 2.5 inch male that has been in the aquarium for 9 months. I was a little concerned when I received a very small specimen. For the first half day the male chased her under a ledge above the sand that she now sleeps in. On the other side of the rock ledge the male sleeps peacefully. The two spend the days picking at the 150 plus pounds of live rock that is well seasoned and loaded with pods. They also both eat the frozen brine and mysis that lands on the rocks and in the sand.