Foxface weird bruises

[peterthegamer]

Hey so my fox face is now swimming on its side with these weird marks which was not an issue yesterday. Any advice or what could have happen ?

 

[Goodair]

The color change is normal, swmming on its side is a concern though....

 

[Goodair]

When they get stressed or sleep, they go into camoflauge colors. Can be blothy, dark, a mix, it varies.
What are your water parameters atm. Also how long ago did you get the fox?