Need help for my guarami

[evanb]

Hello
I have a guarami which has started to just sit at the bottom of the tank doing absolutely nothing. It kind of slumps against the glass. I know it's not normal as I've got quite a few guaramis of different types. I had one which had the same problem a while ago and it died.
Any advice would be appreciated

 

[Colin_T]

What is the ammonia, nitrite, nitrate and pH of the tank water?
Is it still eating well?
What does its poop look like?

 

[evanb]

It's not really eating much
The poop is long and thin
I will find out the parameters and let you know

 

[evanb]

The poop is just the mucus I think, suggesting it hasn't been eating