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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]
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.
Tank size Temperature range pH range Water Hardness Arowana tetra: Gnathocharax steindachneri: 5 cm (2.0 in) Black phantom tetra: Hyphessobrycon megalopterus: 3.6 cm (1.4 in) [26] The black phantom tetra enjoy being in groups of 6 or more and a slightly shaded tank. Males may claim small territories and occasionally minor battles may occur.
The Landkreuzer P. 1000 "Ratte" (English: Land Cruiser P. 1000 "Rat") was a design for a 1000-ton tank to be used by Germany during World War II which may have been proposed by Krupp director Edward Grote in June 1942, who had already named it "Landkreuzer" ("Land cruiser").
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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.
Bolbitis heudelotii, one of hundreds of aquatic plants found in the hobby. Aquatic plants are used to give the freshwater aquarium a natural appearance, oxygenate the water, absorb ammonia, and provide habitat for fish, especially fry (babies) and for invertebrates.
Discus marmorensis, common name "the marbled disc", is a species of small, air-breathing, land snail, a terrestrial pulmonate gastropod mollusk in the family Discidae, the disk snails. This species is endemic to the United States .