Neon Black (Hyphessobrycon herbertaxelrodi) first appeared in European aquariums in 1961, in domestic – in 1963
Habitat: inhabits the river Rio Takuari, flowing through the territory of Mato Grosso – the state of Brazil. Found in Paraguay and Bolivia.
Prefers areas with a weak current.
Description: body low, laterally slightly flattened, elongated. Tail fin with two blades.
The abdomen is light silvery, and the back is olive. In the gill covers, two burning streaks begin, ending at the tail with a small golden-green spot. The upper one is narrower, shinier and lighter, with a bluish tint.
The bottom is wider, almost black, the bottom edge is blurred. The upper part of the iris is red. All fins are transparent with a yellowish tinge, except for the dorsal, casting red.
There is a fat fin.
Males are slimmer and smaller. Sexual differences in the prespawning period are pronounced: in the male, the black stripe extends over the entire caudal fin and partially overflows into the anal, while females noticeably grow stout.
Neon black – female
The male of black neon grows up to 3.5 cm, the female slightly more – up to 4 cm.
Neon black – male
Arrangement and parameters of the aquarium: a 15-liter aquarium is enough for a couple, and to keep 15-20 fish, which is preferable, you need a capacity of 100-150 liters.
From vegetation it is better to plant echinodorus, cryptocoryne and Ceylon fern, while leaving areas free for swimming. It is advisable to put a small amount of boiled peat on a fine dark soil.
Water parameters: 23-25 ° C; pH 6.5-7; dH 6-10.
The presence of a filter and aerator is desirable. Water is needed old, replacing in small quantities, about 1/5 twice a month.
Do not tolerate bright direct light, the lighting should be top and weak.
Active schooling fish Neon black (Hyphessobrycon herbertaxelrodi) get along well with danios, cardinals, cherry barbs, corridors and any kolchuzhnymi catfish. Neighborhood with shrimp and triton will also be successful.
But it is better to refuse to share with platydors, fringed catfish and aquarium crayfish.
Nutrition: in nature, they feed on tiny crustaceans, small insects and mosquito larvae.
In an aquarium, black neon can be fed with live feeds – a pipe maker, a little bloodworm and artemia; frozen – daphnia, cyclop, moina, shrimp; dry flakes preferably with herbal ingredients.
The diet should include various types of food, otherwise the fish become susceptible to disease and lose their brightness.
Reproduction: The process of breeding black neon is quite complicated. The most suitable time is the spring-summer period, when there is enough live food in natural conditions.
In the spawning shade from three sides of 15-20 liters, water defended for 2 weeks is poured into 20 cm, a separator net and previously washed Ceylon fern and cryptocorynes are placed, and willow roots are placed on the bottom.
Water parameters in spawning: 26-28 ° C, dH 2-12, pH 6.2-6.6.
one of the options spawning aquarium
For spawning, the fullest female and 2-3 active males are selected, which are seated in separate tanks for a week. The day before spawning, the producers do not feed.
Spawning starts at 1-3 days at dawn.
Female productivity – 100-200 small transparent eggs. Mature fish after spawning are deposited, and the aquarium is completely obscured.
The incubation period is 24-48 hours. On the 4-5th day, the larvae swim and can feed on rotifers, nauplii of crustaceans and ciliates, then vegetable food is added.
In small quantities, the feed should be present in the spawn with the fry constantly. Water changes are carried out more often than in adult fish.
It is advisable to install a spray with a light air flow and dimmed lighting.
The fry of black neon grow very quickly, but the first weeks all the time disappear among the leaves of plants. By 3 weeks of age, two longitudinal stripes characteristic of adult fish appear. At this stage, the fry can be released into the general aquarium if the temperature there is not lower than 25 ° C.
Sexual maturity Neon black (Hyphessobrycon herbertaxelrodi) reaches to 8-11 months.