The tetra first appeared in Europe in 1932. The homeland of the fish is the tributaries of the Tokantins River (Brazil), as well as the lower tributaries of the Amazon River, South America (Central and Southern parts).
The body of an adult tetra is high, slightly elongated, not more than 4-5 cm in length. Females are fuller than males, their swimming bladder is curved and narrow, while in males it is thicker and shorter. A dark strip runs along the body of the fish. The color is dominated by lemon yellow. The iris at the top is colored red. The anal fin at the base is yellow, has a wide black edging in the male and finer in the female. Dorsal fin is black and yellow. The color of males is brighter than that of females.
Infusoria, rotifers, and live dust are used to feed the fry. Adult food must be varied: lively and dry. It is impossible to overfeed fish, as females are prone to obesity, and it can cause infertility. Fish will not forget to try the leaves of plants in the aquarium.
Maintenance and care
Tetra are peace-loving, therefore it is better to keep several individuals together to make a flock. A tank for 6 fish should hold at least 40 liters of water, put dark soil on the bottom and plant a lot of plants. Algae are densely located, but at the same time they leave several free sections of soil so that the fish can actively swim. Floating plants are placed on the surface of the water, and snags are put on the bottom for beauty. Water parameters should correspond to the following indicators: acidity 6-7, hardness from 5 to 150, temperature from 22 to 270. Fish need clean, but "old" water enriched with peat (peat filter or pieces of cooked peat at the bottom). Once a week, water is replaced by a quarter.
Breeding lemon tetra is not easy. Before spawning, males are isolated from females for 14 days, all fish are well fed. In order to arouse their desire to spawn, from time to time they conduct a partial change of water in order to imitate the natural living conditions. Lighting should be diffused, moderately bright. The aquarium is selected at the rate of 6-10 liters of liquid per pair of fish. A separator grid and a washcloth with small-leaved plants, for example, Thai fern, are placed inside the tank. For spawning, a mixture of yellowish distilled and aquarium water is used, which is obtained by adding peat extract. Water in spawning should be from 25 to 27 degrees Celsius, with acidity ranging from 5.8 to 7, hardness from 1.5 to 100. Spawning can be stimulated by increasing atmospheric pressure.
Producers are placed in the aquarium for spawning for 3-5 days. The female lays from 100 to 300 eggs, then adults are planted. Most of the water (or at least half) in the aquarium is replaced (the composition should remain the same), and the eggs are protected from light by darkening the walls of the tank. After six or eight hours, dead caviar, which becomes cloudy, should be removed from the aquarium. The incubation period lasts up to 36 hours, and the fry begin to eat and swim on the third or fifth day. Lighting after the appearance of babies is enhanced. In the case when spawning did not take place, the fish should be planted for a week and repeat all the necessary manipulations again. For breeding tetra with a lemon flock, you need an aquarium with a capacity of 150 liters and a water level of 20 cm. The spawning must be equipped with a biofilter with a pump. A washed bloodworm is used for feeding. To have more fry with the help of a siphon, eggs are periodically removed from under the net. The ability to reproduce in lemon tetra appears at 8-12 months of life.