Green Neon Tetra Turned Clear

[Paul9911]

Hello! I have a giant tank of Neon Green Tetras and I noticed to today that one of them is discoloured. I thought it was because of the light so I tried to change the lighting and he won’t seem to change back to his original colour. He’s swimming very well and eats as well and other than his colour he acts healthy. I moved him into a temporary smaller tank until I can figure out what’s wrong with him. I also did a water change in the main tank and check the parameters which all look good! Help!

 

[Colin_T]

Hi and welcome to the forum

Can we get a picture of both tanks?

Is the fish swimming around with the other green neons?

What is the ammonia, nitrite, nitrate, pH and GH in the tanks?

How long have you had the fish for?

Have you added anything in the last 2 weeks?

Have you got any plants, in particular floating plants in the tank?

What sort of light is above the tank and what is the routine you use to turn the tank light on?
eg: do you turn the room light on, wait a bit and then turn the tank light on?