DetailsOut Of Stock Red Marlboro Discus (Symphysodon discus) $44.99 Long considered the most beautiful of all freshwater aquarium fish, the discus remains a popular fish for serious hobbyists. Discus originate from the warm, acidic waters of Amazon tributaries in Brazil and Peru and are typically found in large groups. The many wild forms of discus have been selectively bred to create dozens of colorful strains, including the Red Marlboro, which is known for its deep red body and red face. In the aquarium, regular large water changes, a protein-rich varied diet, and warm water temperatures (78-84) will create ideal conditions for these fish to thrive. Like all discus, they will do best in soft, slightly acidic water but will reward patient aquarists with spectacular coloration.