Re-defining the typical stereotype of "DEATH" in putting a flowerhorn and discus together in a same tank. I am lucky that my flowerhorn is a cool guy. The discus accepted him, and he enjoys being with the discus. There's no chasing or aggression. Each flowerhorn has his own personality; not all flowerhorns are aggressive. Filtration: one Fluval FX6, 2 Marineland Emperor 400 over-hang filters, 2 Tetra deep water 300 air pumps, 2 Aqua Top Weighted Sponge Filter 180 Gallon 35 Pores Linear Inch. Temperature is kept at 86F.