Fish erythrosinus in nature is found in the northern rivers of South America. In Russia, this aquarium inhabitant was in 1957. Tetra firefly erythrosonus belongs to the family of haracin, to the class of ray-ray fish.
Appearance of erythrosinus
Aquarium fish erythrosonus have a translucent, flattened from the sides and slightly elongated body with a longitudinal red shiny strip. Color of scales from light yellow to brown, abdomen whitish, back greenish. All finlets are transparent with milky-white end, on the dorsal there is a red stripe. The eyes of the fish are two-color: on top - orange, from below - blue. The adult grows up to 4.5 cm, lives with qualitative care until 4 years. Females are always larger than males.
Erythronus content and care
Erythrosonus is a peaceful and calm fish that feels better by living in a pack. It is recommended to contain 10-15 individuals in a 45-liter or larger aquarium. The water must be well-established, with a temperature of 21-25 ° C, a hardness of not more than 15 °, acidity of 6-7.5. At the bottom poured a dark soil and planted shrubs such small-leaved plants, as hornwort, Elodeya Canadian, perelistnik, fern. Tetra erythrosonus loves thickets and warmth. The slightest deviations from the temperature regime threaten the rapid death of the fish. The aquarium must be aerated and filtered well. A third of the water should be replaced every week with a fresh, settled 2-3 days.
Erythrosinus is not very demanding on nutrition. A good meal for him will be a coretra, daphnia, a small bloodworm, a cyclops, a pipe man. Canned or frozen substitutes and dry mixes can be used, but not always. An excellent addition to the main food are vegetable bait.
Fish breeding erythrosonus
An ingrained opinion that sour soft water is necessary for the breeding of erythrosinus leads all attempts to get the fry to failure. In fact, the spawning process under these conditions will go well, however, the fry that hatches from the larvae can not fill their bladder with air, to go up. They will gallop on the bottom and quickly die. Optimal acidity of water in the aquarium for spawning is considered to be 6.5-7, and rigidity should vary from 2 to 10. Another important condition for the successful withdrawal of fry is the shading of the reservoir and the presence of a large number of plants.