Fish float on side and don't responds

[Lakshay]

Fish is floating on side of aquarium and it's very lazy don't respond. And colour is also fading . Hardly eats

 

[Reeferdood]

Photos are worth a 1000 words. What type of fish & how long has it been acting strange? Tell about your system and parameters and your feeding habits.
Im sure these are some of the questions that @Humblefish would want answers for.
Good luck with the fish..