my-flowerhorn-sick Home >> Questions >> my-flowerhorn-sick 0 Vote Up Vote Down shilpa asked 8 years ago my fish is getting black in clour 1 Answers 0 Vote Up Vote Down Yashwant Naik Staff answered 8 years ago Hi Shilpa, He is suffering from Stress. Please use Epsom Salt. Thank you, Yashwant Naik