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Symphysodon (colloquially known as discus or discus fish) is a genus of cichlids native to the Amazon river basin in Brazil.Due to their distinctive shape, calm behavior, many bright colors and patterns, and dedicated parenting techniques, discus are popular as freshwater aquarium fish, and their aquaculture in several countries in Asia (notably Thailand) [1] is a major industry.
The 70 wild species shown in this table total 41,925,250 tonnes. Other wild species total 49,410,980 for a world total of 91,336,230 tonnes of wild, captured animals. [2] The 31 cultivated species shown in this table total 45,252,999 tonnes.
The taxonomy is disputed, but FishBase follows a review of the genus from 2006. [2] [8]In 2007 it was suggested that the correct scientific name of the blue/brown discus is S. haraldi, whereas S. aequifasciatus is the correct name for the green discus.
The scientific name was coined by Earl Lyons in 1959, and the species was revalidated by pattern, morphology and mtDNA in 2006. [2] [7] Later studies have confirmed its distinction, although some suggest the correct scientific name for the green discus is S. aequifasciatus (a name typically used for the blue/brown discus).
Symphysodon discus, the red discus or Heckel discus, is a species of cichlid endemic to the Amazon Basin of Brazil, where found in the lower Rio Negro, upper Uatumã, Nhamundá, Trombetas and Abacaxis. [2] 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. [3]
Common names of fish can refer to a single species; to an entire group of species, such as a genus or family; or to multiple unrelated species or groups. Ambiguous common names are accompanied by their possible meanings. Scientific names for individual species and higher taxa are included in parentheses.
Brachychalcinus orbicularis, or the discus tetra, is an omnivorous characin found in rivers, creeks, and tributaries in tropical South America. [ 1 ] References
This common name is used for three different species of schooling fish with similar patterns: Hemigrammus rhodostomus, Hemigrammus bleheri, and Petitella georgiae. Splash tetra: Copella arnoldi: 5.5 cm (2.2 in) Spotted splashing tetra: Copella meinkeni: 4.5 cm (1.8 in) Pyrrhulina spilota: 7 cm (2.8 in) Serpae tetra: Hyphessobrycon serpae: 4.5 ...