Home » Animal » Red Marlboro Discus Red Marlboro Discus 5 Discus, Freshwater Fish Latin name: (Symphysodon sp.) Care Level Moderate Temperament Peaceful Color(s) Red, Yellow Diet Carnivore Preferred Conditions Moderate Avg. Max Size 8" Minimum Tank Size 55 gallons Family Cichlidae The Red Marlboro Discus is a territorial fish that requires advanced care. It is among the schooling group and forms a well-defined nuclear family during spawning.