One of marlboro red is not eating as much as the other and it's only eating frozen BW where before it will eat anything that is thrown into the tanks, the colour has turn a bit pale, not like the other marlboro red that I have in the tanks. It is not passing any white feces.
I have taken it out and put it into another aquarium and now I'm treating it with Metro (250 mg per 10 gallon) and also with salt, and also feeding it very lightly (2 times a day, 1/2 cube of frozen BW). Is this ok, or should I do anything else now ?
Thanks