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The water should be soft to slightly hard, d°GH of 6° to 15°, with a slightly acidic pH of 6.8, in the range 6.0 – 7.5. It prefers a temperature of 25 °C (77 °F) in the range 22–28 °C (72–82 °F). The hardiness of this fish allows it easily to adapt to harder water, though soft water is essential for captive breeding.
Tropical fish is a term commonly used to refer to fish that are kept in heated aquariums. Freshwater tropical fish are more commonly kept than saltwater tropical fish due to the common availability of fresh water sources, such as tap water, whereas salt water is not commonly available and has to be recreated by using fresh water with sea salt additions.
The tropical climate of the betta's natural habitat is characterized by sudden and extreme fluctuations in water availability, chemistry, and temperature. [22] Water pH can range from slightly acidic (pH 6.9) to highly alkaline (pH 8.2), while air temperatures drop as low as 15 °C (59 °F) and rise as high as 40 °C (100 °F). [ 22 ]
Guppies prefer a hard-water aquarium with a temperature between 25.5 and 27.8 °C (78 and 82 °F) and salt levels equivalent to one tablespoon per 19 L (5 US gal). [60] They can withstand levels of salinity up to 150% that of normal seawater , [ 61 ] which has led to them being occasionally included in marine tropical community tanks, as well ...
A benthic spawner and egg scatterer, the adult fish will spawn around 2,000 eggs. This breeding occurs in soft, warm water in low light. Silver dollars natively live in a tropical climate in the sides of weedy rivers. They prefer water with a pH of 5–7, a water hardness of up to 15 dGH, and an ideal temperature range of 24–28 °C (75–82 °F).
Platy is a common name of freshwater fish in the genus Xiphophorus that lack a "sword" at the bottom of their tails. This species is a livebearer, similar to other fish of the family Poeciliidae, such as the guppy and molly. Platies are native to the east coast of Central America and southern Mexico. [1] [2] Rainbow Platy (male)
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A thermocline (also known as the thermal layer or the metalimnion in lakes) is a distinct layer based on temperature within a large body of fluid (e.g. water, as in an ocean or lake; or air, e.g. an atmosphere) with a high gradient of distinct temperature differences associated with depth.
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