Blue discus fish

Blue discus fish (Symphysodon aequifasciatus haraldi) is one othe most beautiful and common discuses. Also it is called Turquoise discus because it's colour is similar to turquoise stone colour. If you keep blue discus fish I advice you to add some blue lights at your aquarium. Than the blue colur of your discus fish becomes more bright and beautiful.

That's a turquoise stone

That's the blue discus fish