What's happening to my Texas c.

[Punjabiking1500]

Guys a month ago i shifted my two Texas in the same tank and they had a fight i had to separate them now one Texas is not eating not eaten from a long long time like more than a month but i see black poop sometime
The other one is eating but looks like losing its scales and shivering with its mouth open eats normally
What are your opinions pls help guys
Bad pic because the lights were out

 

[Punjabiking1500]

The one not eating looks completely fine
The one with vanished scales looks like sunken eyes like i felt it's just the lvl of the body and hides all day

 

[Gourami Swami]

Better pic would help, and more details. The fish are separate now?
The fish in the pic seems like it may have a disease or fungal infection which would cause the appearance change.

 

[Punjabiking1500]

Better pic would help, and more details. The fish are separate now?
The fish in the pic seems like it may have a disease or fungal infection which would cause the appearance change.

That fish is making very very erectile motions like mouth open and bumping in what ever comes in way turned all pale