Ram Help Please

I have two Rams, was told when I bought them one is female and the other male, they were quite different one bigger than the other and more colourful. I have had them now roughly 3 months or so. They are happy with each the other and the one i thought was male put the Angel Fish in their place. Then this afternoon i noticed the male getting rammed by the what i think is the female and not swimming. The female seems to have grown rapidly over night and formed loads more colour, looks great. I put the male in a breeding tank whilst i had to go back to work to give him a break, I have put him back in the tank and the other Ram wont leave him alone, not fighting as such just mithering (if that makes sense) The poorly Ram just seems to want to balance on the gravel doesnt look good and not feeding, usually swims right to the bloodworm first. Checked the nitrates, ph etc and all normal no change, any suggestions i dont want to loose by good looking fish!!

I had this problem...what i thought i had one of each sex i think turned out as two males...if one is being bullied to the point that it is not eating and is not well i would separate them both...or try moving stuff around in your tank to mix up their territories and see if that helps.

Just be aware though that if it still continues you may find yourself with two fish that are ill...as i found with mine and as a result i lost one and nearly the other as well.
Males and females have been bred by people to be so similar that LPS sometimes dont have a clue which is which!

If you think you have two males....rehome one. Thats my recommendation.

Also how big is your tank?

its 125L
plenty of caves / territory. trying to add pics now to show what they look like

here are pics of the poorly Ram, is male right?? not good pic sorry.
The bottom is the supposed female, what you think?

The first pic does look like a male but not sure on the 2nd.
Females tend to be slightly smaller, less colourful and have a pink belly. The pink is usually quite distinguished so should be easy to spot.

He is now swimming backwards??

The one I thought was female has now died, the male is still not swimming just moving around on the ground, any one any ideas, would it just be that they fought to death?