Royal Gramma courting behavior?

[Deinonych]

A couple months ago I introduced a second Royal Gramma to my tank. The established RG has been in the tank for about 2.5 years. The two fish seem to be getting along fine. I've never noticed any fighting. Recently, I noticed the newer RG doing a sort of "shimmying" behavior toward the established fish and am wondering if that's the beginning of some sort of courtship behavior? I know clownfish do a submission dance when they are establishing dominance and/or mating. Do RGs do the same thing?

 

[ThRoewer]

It is in fact a bit similar to clownfish. Grammas also do the headshaking thing, but less intense. It is a bit of a mix of clownfish, dottyback and angelfish mating behavior.
You should recognize it when you see it.

 

[Deinonych]

It is in fact a bit similar to clownfish. Grammas also do the headshaking thing, but less intense. It is a bit of a mix of clownfish, dottyback and angelfish mating behavior.
You should recognize it when you see it.

The subtle headshaking was exactly what I observed. Thanks for the confirmation!