Discus

🌍 Overview

Discus are tall, laterally compressed cichlids from the slow-moving blackwater tributaries of the Amazon Basin, prized in the aquarium hobby as the self-styled 'king of the aquarium' for their vivid, selectively bred color patterns. Unlike most cichlids, which pair off and defend territory, discus are genuinely social and do best in a group. Both parents feed newly hatched fry a nutrient-rich mucus secreted from their skin, a form of parental care called 'discus milk' that is highly unusual among fish.

📋 Quick Facts

📜 History

Johann Jakob Heckel coined the genus name Symphysodon in 1840, for the unusual joint where the teeth meet, and the fish then stayed a museum specimen for the better part of a century. Dealers only began importing discus into Europe and the United States in the 1930s and 1940s, and nobody spawned them dependably until the late 1950s, when Jack Wattley in the United States and Eduard Schmidt-Focke in Germany worked out how. Into the 1970s the palette was limited to wild blue, green, brown and Heckel forms, after which American breeders produced the turquoise and then the cobalt lines. Most strains in shops now, pigeon blood and blue diamond among them, appeared in Asia during the late 1980s and 1990s.

🧠 Test Yourself

🤩 Fun Facts