Hi
One of my forktail rainbow fish , the largest male, just looks as if he’s dying. He’s slow, doesn’t seem to be eating. Swims sluggishly head up sometimes at the top of the tank
Parameters are fine I’ve done a 20 percent water change yesterday all the other Fish are completely fine.
I don’t understand what’s happened here. He was very healthy until five days ago and the boss of the tank (biggest guy in there )
Can anyone think if this is reversible ?
Posted by DifferenceStill4141