About a month ago (jan 11th) I had a suicide YoYo loach here. My cat brought the dead body to my room and I found it when I woke up. Since that day I could only find 3 YoYo loaches on my tank but it should be 4 as the 5th had just passed away.
Today, about a month later, I found the missing 4th YoYo loach. She was in a very tiny space between one of my internal filtersand the glass. Anyone here would say... "she is there because she wants to" but not at this time. She was really stuck. I was able to help her to move out that place but noticed her spine was not straight and she was not swimming the way she ought to.
I take her to a small nursery and made this video:

As you can see, her spine is bend left and she can´t stand straight. Sometimes she gets upside-down or lay on her side but still with bended spine. Looks like she has a crick, wryneck.
Her breathing is faster than the others. All conditions in my tank are good: No ammonia, no nitrites, nitrates at 25 ppm, GH=5, kH=2, temp=29°C.
I´m keeping her here while wonder what to do...

Has anybody had an isue like that?
All advices will be most apreciated.

Thanks!