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Neon blue (Paracheirodon innesi) – content, breeding

Neon blue or ordinary (Paracheirodon innesi) Myers, 1936.

Refers to the order Cyprinids (Cypriniformes), sub-order of Characoidei, the Kharacin family, or American tetras (Characidae).

Accepted name – Blue neon.

These small fish owe their appearance in Europe to Augusta Rabo, who was interested in exotic species of insects (primarily butterflies) and plants (orchids) for collections of rich amateurs and museums of different countries. He first saw this fish in the Indians when he was sick with fever. Neon swam in an earthen vessel standing in a dwelling.

Rabo appreciated the discovery and, on recovery, began work on transporting the fish to Europe. For a long time he hid the habitat of these glowing fish in order to maintain the monopoly of their supply.

He sent a few pieces to the famous tropical fish connoisseur, William Innes, who at that time was publishing the magazine Aquarium in Philadelphia, in the hope that his magazine would create an advertisement for Rabo. Innes was surprised: he first saw such wonderful fish.

He immediately sent them to the definition of one of the largest ichthyologists in the United States, Professor Myers, who described this species and gave it a specific name.

Inhabits the forest tributaries of the Ukayali, Putumayo, Yarapa rivers (Peruvian part of the Amazon basin). These are rivers with a peat bottom, flowing under a very dense canopy of trees.

Light penetrates the water through the dense foliage in small quantities, creating twilight. Leaves and branches falling into a reservoir, rotting away, acidify the water, and a thick layer of silt makes it difficult to wash out and dissolve salts from the bottom rocks. Rainfalls during the rainy season also replenish water bodies.

Therefore, the water here is exceptionally soft, sour, transparent and enriched with tannic and humic substances that give it a brownish tint. Apparently because of this, the fish (being a school) for finding each other, almost in complete darkness, have a bright band along their entire body, which, falling under the glare of the sun, flashes like neon advertising, either in green or in bright blue light. Under this stripe, starting from the middle of the body and up to the beginning of the caudal fin, another wider band stretches of bright red color … The sex differences in fishes are weakly expressed.

The female has a fuller abdomen and a bent green strip, while the males have a more slender body and the strip is straight. In addition, in males, the swim bladder, which is visible through the body, is shifted to the anus, while in females it is closer to the spine.

Size about 4 cm.

Content neonordinary(Paracheirodon innesi) relatively not difficult. The aquarium should be equipped in accordance with the conditions of the natural water bodies where they are found. The lighting is moderate, with shadows.

The soil is dark (basalt crumb, boiled peat and snags), densely planted with plants (Thai fern, myriophyllium, etc.), but with free places for swimming. The aquarium can be of any size, preferably in a length of at least 30-40 cm and a height of 25-30 cm.

To the composition of the water, if you do not have in mind the subsequent dilution, they are unpretentious: dH to 20˚ (better to 10-12˚), pH value in the range of 5.5-7.5 (better to 6.0-6.5). The water temperature is 22–25 ° C, and significant temperature fluctuations must be avoided.

Schooling fish, mobile, active when feeding (feed should be quite small – the mouth of the fish is small). R. innesi – peaceful fish, suitable for keeping in mixed aquariums.

The fish looks very good in a flock (20-30 or more individuals) together with species with the same conditions and similar in size.

But keep in mind that Neon blue (Paracheirodon innesi) (like most of the fish in this area of ​​South America) it can well withstand a certain increase in nitrites and nitrates, but does not tolerate large amounts of fresh water when it is replaced! It is better to substitute small portions, but more often …

Breeding neon ordinary requires some knowledge of hydrochemistry and fish farming experience. The main condition is a thorough training of producers, spawning grounds and, especially, water. The water in the spawning area should be very soft (0.5-4˚) and acidic (pH 5.5-6.5) with a temperature of 22-24 C.

For breeding P. innesi should not be used as producers of adult fish. When preparing a full-fledged producer, young individuals of 2-3 months old should be taken, which are kept in certain conditions. The aquarium is filled with long-standing tap water with the addition of ¼ of distilled or pure rainwater.

Males and females are kept separately and, regardless of the season, fed with live food, excluding tubule and Enhitreus. It is enough to give the neon Daphnia and Cyclops, as well as fine moth and corret.

They spawn on spawning either in pairs, or in a flock of 5-10 pairs. To do this, you must choose females with the same readiness to spawn tag.

For one pair of manufacturers can be used 5-6 liters of prepared water.

It has been established that acidic water has bacteriostatic properties, that is, it inhibits the development of bacteria. This property is of great practical importance for breeding fish. It is known that in hard water (above 4-5˚), the shell of the egg of many haracin ones becomes impermeable to the spermatozoon, and fertilization does not occur.

Therefore, it is necessary to artificially prepare water for the spawning grounds. It is enough to take 10 liters of distilled water and add 1 liter of water. Place the container with soft water in a dark place and let stand for two weeks.

Mineral salts, as well as sulfuric, nitric, phosphoric and other acids cannot be used in acidifying water.

For the breeding of P. innesi, all-glass aquariums are used, which must be thoroughly washed and disinfected. At the bottom it is enough to put a separator grid or grid with a fixed willow root. The spawning site is preferably covered on three sides with dark green paper, on the fourth it should receive diffused light.

The water in the spawning area should be thermostatted and slightly aerated with small air bubbles.

Mature growers are spawned in the evening. In spawning fish do not feed.

Spawning usually begins the next morning. After laying off the eggs (for 3-4 hours), the producers are removed with a disinfected net, and tripoflovins are added to the water before acquiring a soft yellow color.

Spawning completely obscure. During spawning, the female throws away from 100 to 250 eggs. Males are deposited in a reserve aquarium.

This is done because females spawn for 7-10 days for the next spawning, while males are fully ready only after 15-20 days. Consequently, other spawning males are planted on the next spawning of females.

20-24 hours after spawning, the larvae hatch from the eggs.

Larvae Neon blue (Paracheirodon innesi) they are supplied with yolk sacks, due to which they feed, develop and turn into fry for 5-6 days. From this moment they start feeding the fry.

One half of the aquarium is slightly illuminated so that the fry, gathering in a darkened area, take the food in the illuminated part better. They are fed by zooplankton, sifted through a thick sieve and mixed with rotifers, which are the best starting food for neon ordinary fry.

We must remember that the first time an aquarium with fry can not be brightly illuminated. The blackout is removed only at the moment when the fry of R. Innesi is sufficiently strong, i.e. in 12-14 days.

This period is the most responsible in the cultivation of fry, because due to their low motor activity in water, it is necessary to maintain a high density of food organisms. At 14-15 days the fry can already eat small daphnids and cyclops. During this period, a red stripe appears on their body, and they become similar to their parents.

Fry can be transferred to a large aquarium without soil, with water of the same composition and temperature as in the spawning pool. As the fry grow in the nursery aquarium, in which they will be kept later, they pour water in small portions (to gradually adapt to the quality of the aquatic environment).

The most negative factor for P. innesi fry is a high level of proteins and an excessive amount of bacteria in the water.

Of the diseases most often marked plistophorosis. In diseased fish, the color dims, the neon strip brightness disappears, coordination of movements is disturbed: they keep their tail down at an angle of 45. 60 °.

Trying to get out of this position, they make an abrupt movement upwards. Stop taking food.

Treatment of the disease is not developed. When it occurs, fish, plants, snails must be destroyed, the aquarium should be sanitized, nets should be heated or boiled.

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