Aquarium Forums UK

My male guppy I believe had swim bladder disordered so we stopped feeding for three days and things seemed to improve... but now a day or two later the guppy has now again begun swimming on its side/ upside down and scales are now green in colour... can anyone advise

Any help would be greatly appreciated

What do you feed and how much?
Do you have the water parameters? (ph, ammonia, nitrite, nitrate, temperature, hardness)
Can you get a pic of the fish?