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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.
This is a list of aquatic animals that are harvested commercially in the greatest amounts, listed in order of tonnage per year (2012) by the Food and Agriculture Organization. Species listed here have an annual tonnage in excess of 160,000 tonnes.
Although it is a small fish, the White Cloud Mountain minnow is sometimes used as a pond fish, especially in ponds intended for frogs to breed. Adult White Cloud Mountain minnows will sometimes eat frog eggs as the tadpoles begin to move about or wait for them to hatch. Once tadpoles are a couple of days old they are out of danger.
A tank that includes paradise fish should be at least 20 US gallons (76 L; 17 imp gal) in size for a single male or 20–30 US gallons (76–114 L; 17–25 imp gal) for a community tank. The tank should be well planted [3] and covered; bogwood and rockwork may be included. Paradise fish tankmates must be chosen with care.
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).
The U.S. will no longer allow the import of seafood linked to the bycatch of marine mammals. Each year, over 650,000 marine mammals, including seals, whales, and dolphins, are killed by ...
The family also includes many popular freshwater aquarium fish kept by hobbyists, including the angelfish, oscars, and discus. [ 8 ] [ 9 ] Cichlids have the largest number of endangered species among vertebrate families, most in the haplochromine group. [ 10 ]
Many people that purchase these fish do not realize that the fish could grow to a foot long (30 cm) within a year. Due to their fast growth rate and large size as an adult, they are often kept in aquariums that are too small for them. [45] 72-80 °F (22-27 °C) [45] 6.0-7.5 [45] Butterfly peacock bass: Cichla ocellaris: 74 cm (29 in) Orinoco ...
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