ember tetra losing color almost see thru

[Crash_2011]

pH 7.6

nitrates 25

hardness 300+

nitrite 0

ammonia 0

kh/buffer 120

water temperature 75

hello everyone I have a problem with my ember tetra one passed away today and it was swimming sideways had a big belly like bloat but it didn't have any color and u could see its spine and insides like it was going transparent I have another one that is starting to look the same way the photo is not a good one but u can see how the spine is starting to to be seen the tank has been set up for over a year I have had these guys for about a year I do have orange shrimp in the tank as well any advice would be greatly appreciated 

[Guppysnail]

I’m sorry for your loss. Have you added anything new? Done something different? Fed new food? Etc? The loss of coloration to that degree in fish is extreme stress in my experience. 

[Colu]

I seem to remember seeing something similar in ember tetras loss of colour and going clear it was cause by a parasitic infection I would treat with paracleanse it's shrimp and snail safe do 2 courses of treatment 2 weeks apart you might have to do a third course depending of how your fish respond to treatment

Edited February 11, 2022 by Colu

[Crash_2011]

no I have not done anything new to the tank I do have some Paracleanse I will start treatment to today thanks for the advice