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For those seeking to breed them in the aquarium, the best way to do so is by mimicking the same natural setup. A study conducted in Manaus, Brazil, subjected cardinal tetras to adverse water conditions for 96 hours. The fish perished at a low temperature of 19.6 °C (67.3 °F) and a high of 33.7 °C (92.7 °F), and pH below 2.9 or above 8.8. [5]
Vietnamese cardinal minnows do best in a water temperature ranging from 19–23 degrees Celsius. Softer water within the range of 37–142 ppm is also preferable. They are peaceful, though males constantly challenge one another, harmlessly, and do well with a variety of fish, such as cyprinids , catfish , loaches , and tetras .
The Congo Tetra is a moderately hardy freshwater fish. This species thrives in a well-maintained aquarium that mimics its natural, slightly acidic and soft-water habitat. Optimal health for Congo Tetras is achieved in a stable environment with good water quality, a balanced pH level of around 6.0 to 7.5, and temperatures between 72°F and 82°F.
The neon tetra (Paracheirodon innesi) is a freshwater fish of the characin family (family Characidae) of order Characiformes. The type species of its genus, it is native to blackwater and clearwater streams in the Amazon basin of South America.
Hemigrammus erythrozonus, commonly known as the glowlight tetra, is a small tropical fish from the Essequibo River, Guyana, South America.It is silver in colour and a bright iridescent orange to red stripe extends from the snout to the base of its tail, the front of the dorsal fin being the same color as the stripe.
Tetras are many species of freshwater tropical fish in the characin family or in the African tetra family of order Characiformes. Not all characins are called tetras; this category includes only those fishes commonly called tetras.
The emperor tetra is a placid aquarium fish and will be disturbed by more boisterous species. It grows to 4.2 cm. [3] It prefers a pH of 6.5, a hardness of 3–6 dKH and a temperature of 23–27 °C. It does not school as readily as most tetras, and a pair appears happier than with most tetras.
Paracheirodon is a genus of freshwater fish in the family Characidae of the order Characiformes. The type species is P. innesi, the well-known neon tetra, and the Paracheirodon species are among the fishes known as tetras. All species of this genus are native to the Neotropical realm, occurring in the Orinoco and Amazon Basins in northern South ...