My female neon.....at least I think it is female.....rounder belly and curved blue line......hovers just above the gravel kind of wiggleing her tail. It's pretty cute and she does not at all seem in distress.
The first time she did this was near the base of a fake plant, the next 2 times it was inside of a swim thru cave where it is dark.
If I were to take a wild guess, I would think she was laying eggs, but I didn't see any, nor, from what I have read are my tank conditions right for this.
My tank (55g) has 10 Neons. From what I have found on the net about figuring out which is male and female, I think I have 2 males and 8 females. If so, that was a stroke of good fortune IMO