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The tank should be well-planted, providing shelter and hiding spots. Common to these fish is a 'sputtering' or 'twitching' style of swimming, in which their movements seem more spastic as opposed to other fish. Instead of swimming smoothly or for long distances at a time, Serpae Tetras move in relatively short spurts, unless stressed.
The Buenos Aires tetra are very durable, and do not have any special needs or requirements. A maintained freshwater tank and food is all that they really need. However, they are hearty feeders that must be well-fed or they may begin to nip at their long-finned tank-mates. Keeping the tetras in a school of 5 or more definitely decreases aggression.
The black tetra is also known as the black skirt tetra. The female black tetra is more robust and larger than the male. [29] Black morpho tetra: Poecilocharax weitzmani: 4 cm (1.6 in) Bleeding heart tetra: Hyphessobrycon erythrostigma: 6.5 cm (2.6 in) The bleeding heart tetra is distinguished by the small red spot on both sides of the fish.
Most of the livebearers, barbs, tetras, rasboras, danios, and rainbowfishes are peaceful, though a few species are fin nippers, most notably tiger barbs and serpae tetras. Angelfishes, gouramis, and Corydoras catfishes are also popular, though angelfish are predatory and will eat very small fish such as neon tetras and livebearer fry. The size ...
With more individuals in the tank, kuhli loaches tend to be more active and less shy. kuhli loach groups of this size can be kept in 20-gallon aquariums but can be housed in something larger if given enough hiding places. Other species that make good tank mates include tetras, minnows, shrimp, corydora, danio, and other non-aggressive fish.
The flame tetra (H. flammeus) is bred in large numbers in captivity and common in the aquarium trade, but rare in the wild. [5] </ref> [6]Most of the species in the genus have not been rated by the IUCN Red List as Threatened, but many species have small distributions and at least three, H. flammeus, [5] H. coelestinus and H. duragenys are classified as endangered. [7]
Characidae, the characids or characins, is a family of freshwater subtropical and tropical fish belonging to the order Characiformes.The name "characins" is a historical one, [2] but scientists today tend to prefer "characids" to reflect their status as a, by and large, monophyletic group (at family rank).
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.