Discus are a very popular fish, coming in nearly every color.  They are large fish and require a large tank.  They should be kept in groups of 6 or more.  Discus are very particular about nearly perfect water parameters so they are should be kept only by more experienced fish keepers.

Patrick Farrelly [Public Domain]
Patrick Farrelly [Public Domain]

Category: New World Cichlid, Discus

Common Names: Discus

Scientific Name: Symphysodon sp

Family: Cichlidae

Minimum Tank Size: 55 Gallons

Care Level: Difficult

Temperament: Peaceful

Max Size: 8 Inches

Temperature: 80-86 F

pH: 5.5-7.0

Tank Level: Middle

Colors: Blue, Black, Green, Red, Orange, Yellow

Diet: Carnivore

Breeding: Difficult

Karelj [CC-BY-SA-3.0]

Karelj [CC-BY-SA-3.0]