little man syndrome

My smallest emp keeps trying to fight my biggest. When my smallest moves he has jerkish movments. Almost like he is twitching. Is that something I should be worried about. And should I worry boy him trying to attack my largest? My largest pays him no mind

like this?
https://www.youtube.com/watch?v=g9hRdT4Ji30

Sorta but it looks more almost like muscle spazms. But he is still fairly small. Could it be something else? If not is it only males that do that and do they only do it too female?

juddering is what males do, it is a mating behaviour, try get a video of what your guy is doing?

I will if I can. It seems to maker sense. He only really doors it when the other is around and when he attackes it does not look like he is trying to cause any damage. He had his punchers over her tail but he did not clamp down. On a side note I don't know if it's relevant but last night he was normal. I head crushed a couple crickets for my the scorps and left en in there over night. Got up this morning and my smallest is way fat. Could that be because he ate a cricket that was prob to big for him or will they poof up when they r trying to mate?

just watched the video on a computer rather then my phone and i would have to say that that is exactly what he is doing. altho a lil milder with my guy. wow thanks very much.

so apparently my largest is a femail. lol

well atleast you know whats going on now