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For freshwater aquaria, gravel is the most common substrate. To prevent damage to fish, gravel should not be sharp. Aquarium gravel can be as coarse as pea-sized or as fine as 1–2 mm. [1] It is available in a number of colors, and may be naturally colored or dyed, and may have a polymer seal to ensure it does not affect water chemistry. [1]
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.
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. Some aquarium fish and invertebrates also eat live plants. Hobbyists use aquatic plants for aquascaping, of several aesthetic styles.
Although having an aesthetic factor, the substrate is an extremely important factor when keeping animals in a vivarium. Some types of substrate can be used to hold humidity, which is essential when keeping certain types of rainforest dwelling species that require high humidity levels during shedding and food digestion. The substrate may also be ...
Substrate is built up so that some "land" regions are raised above the waterline, and the tank is only partially filled with water. This allows plants, such as Cyperus alternifolius and Spathiphyllum wallisii , as well as various Anubias and some bromeliads , to grow emersed , with their roots underwater but their tops in the air, as well as ...
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.
It is a peaceful fish that is best kept in good sized groups (6+) in a mature tank with plenty of shady hiding spots amongst plants, driftwood, slate caves, and PVC pipes. [21] 75-82 F (24-28 C) [21] 6.0-7.2 [21] Twig catfish: Farlowella spp. Sturisomatichthys spp. Hypoptopoma spp. Golden dwarf sucker, golden oto: Otocinclus macrospilus: 3.5 cm ...
Tank designs and techniques for maintaining water quality were developed by Warington, later cooperating with Gosse until his critical review of the tank water composition. Edward Edwards developed these glass-fronted aquaria in his 1858 patent for a "dark-water-chamber slope-back tank", with water slowly circulating to a reservoir beneath. [21]
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