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A neon tetra can appear slightly plump in the belly due to having overeaten. Neon tetras need dim lighting, a DH less than one, about 5.5 pH, and a temperature of 75 °F (24 °C) to breed. There also needs to be a lot of tannins in the water. Neon tetras are old enough to breed at 12 weeks. [23]
For breeding, these tetras need water similar to the waters in which they live in the wild; extremely soft water with a pH of about 6 and a temperature of around 77 °F (25 °C). Ideally, the water should be highly stained by the tannins from peat, [3] in subdued light, shaded by plants. It spawns in a school, although in the actual act of ...
Black neon tetras are kept in soft acidic water, although captive-bread they can often survive in mature tap water with a range of 5.5 - 7.5. [ 7 ] [ 5 ] [ 6 ] Aquarists recommend that the water be kept clean at all times; that the tank contain live plants, a darker substrate and open water for swimming; and that the fish be kept in groups of ...
The surface and cave forms of the Mexican tetra have proven powerful subjects for scientists studying evolution. [28] When the surface-dwelling ancestors of current cave populations entered the subterranean environment, the change in ecological conditions rendered their phenotype—which included many biological functions dependent on the presence of light—subject to natural selection and ...
Black tetras of the leucistic aquarium variant. The black skirt tetra is a common fish that is widely available for purchase. Hobbyists often provide live foods such as Daphnia and mosquito larvae, and frozen foods like bloodworms. [citation needed] In a home aquarium. The species reaches sexual maturity at about two years of age.
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.
The minimum tank size requirement for the Ember tetras is at least 10 gallons with few live aquarium plants. [citation needed] Ember tetras should be kept in acidic water with a pH near 6.6, and although their native habitat has very soft water they have adapted quite well to a wide range of hardness (5–17 dGH). The recommended temperature ...
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.