Wild Discus fish in the flooded forests of the Amazon. Clip from documentary Equator Rivers of the Sun | For The Love of Fish

The Discus (Symphysodon spp.) hails from the slow-moving waters of the Amazon River Basin in South America. Known as the “King of the Aquarium,” these stunning, round-bodied fish require warm, soft, and slightly acidic water (temperature: 82–88°F, pH 6.0–7.0) with excellent filtration and regular water changes. They thrive in groups of five or more in a spacious, well-planted tank with peaceful tankmates. A varied diet of high-quality pellets, frozen, and live foods keeps them healthy and enhanc