Symphysodon discus

Description

Symphysodon discus, the red discus or Heckel discus, is a species of cichlid native to the Amazon Basin, where found in the lower Rio Negro, upper Uatumã, Nhamundá, Trombetas and Abacaxis. This species is essentially restricted to blackwater habitats with a high temperature of 26–32 °C (79–90 °F) and low pH of 4.2–5.2. This species grows to a length of 12.3 centimetres (4.8 in) SL. This species can also be found in the aquarium trade.