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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 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.
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]
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The green discus is found in blackwater habitats with a high temperature of 27–30 °C (81–86 °F) and low pH of 4.8–5.9. [4] Although also known from whitewater , its preference for lentic habitats such as floodplains means that the water contain little suspended material (unlike main sections of whitewater rivers).
These fish must be kept in large aquaria. [4] Silver moony: Monodactylus argenteus: 10" These fish are also known from marine habitats. African moony: Monodactylus sebae: 10" These fish are also known from marine habitats. Indian glassy fish: Parambassis ranga: 3.1" These fish are often dyed. Targetfish, Jarbua terapon: Terapon jarbua: 14"
American Laulauga Tausaga-Collins took gold in the women’s discus at the 2023 World Athletic Championships in Budapest, Hungary, on Tuesday. Tausaga-Collins won the competition with a throw of ...
This fish can range up to 1.5 m (4.9 ft) and weigh 7 kg (15 lb). [73] Seahorses and allies (Syngnathiformes) The largest of this diverse order is the red cornetfish (Fistularia petimba), a long, thin species found in all tropical oceans. This fish can reach a length of 2 m (6.6 ft) and a weight of 4.65 kg (10.3 lb). [73]