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Maintenance and care of tropical aquarium danios fish

To decorate any piece of the underwater world are capable of zebrafish. Fervent, briskly moving together bright flock throughout the aquarium, bioluminescent babies can not help but cause a contented smile in the audience.

Freshwater ray-dwelling specimen, which is widely known in Russian and English-language literature, is recognized as a model organism.

Danio fish is a small graceful creature with dense shiny scales and perky character

Chordial ray-danio from the order of carps is a small graceful creature with dense shiny scales. Slender body has an elongated shape. It is decorated with specks and bright stripes, often smoothly turning into fins.

A feature of the species is the shift to the caudal portion of the dorsal fin.

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Today, popular danios are:

  1. Leopard – the body is covered with miniature specks resembling a leopard placer. View obtained by direct selection.
  2. Danio rerio – the most common form in the home content. Bearing a fancy name “ladies’ stockings” fish is the owner of the original striped color. Longitudinal blue stripes gently alternate with a light yellow background.
  3. Glofish individuals were obtained by a genetically modified method. Scientists have introduced a rare bioluminescence gene. Danio – fish, maintenance and care of which does not give their owners almost any worries, are famous for their peace-loving nature and unpretentiousness to the conditions of detention.

Danio rerio – the most common type of home content

  • On the Malaysian and Malay Peninsulas flocks of pearl fish are common. The fins are reddish or green. The elongated body is almost colorless, has a bluish color in the back.
  • Cherry individuals are separated from the rerio. Difference – completely transparent fins with yellowish or red outflow. Instead of strips you can see bright dark specks of irregular rounded shape.
  • More rarely, there are references to other species: dangile, chopra, margaritatus, orange-fushers and danios “golden ring”.

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    For the production of offspring, one female and two to three males are selected, which are placed for several hours in a spawning aquarium. As a rule, this is done in the evening. During fertilization, the female begins to spawn in the morning.

    The male actively pursues a female before the eggs come out of it. The eggs located under the plants are then fertilized by males.

    At the end of the process, calm and tired males go to rest, and the female loses noticeably the roundness of the abdomen.

    On average, the female gives up to 200 eggs. Use of antifungal drugs will help to save them in the future.

    After about 48 hours the litter matures. The larvae attached to any nearby surface pecked at the light and stopped motionless.

    After 5−6 days you can notice the formation of fry eating infusoria.

    After two days, the fry readily absorb live dust. Adults prefer cyclops and artemia.

    When satisfactory filtration can give crushed dry food.

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    1. Plants. Despite the fact that danios love to frolic in algae, the central area of ​​the aquarium should remain as free as possible. Along the edges, you can organize a reliable thick shelter of cabombs or Vallisneria. It is important to keep in mind the periodic disinfection of all vegetation.
    2. Priming. A wide layer of gravel covered with grainy river sand is perfect for laying out. Danio prefer dark sand. It is important to thoroughly clean and rinse the soil in a weak solution of potassium permanganate before placing it.
    3. Characteristic of water. Danio feels well and actively develops in a neutral or weakly alkaline environment. The temperature can vary from 18 to 24 degrees. Medium hardness should be preferred. Optimal cleansing produces
      Danios love to frolic in the algae, but the central area of ​​the aquarium should remain as free as possible.

    high-performance internal filter. It takes at least once a week to change 25% of the water. General cleaning can be done no more than once a month.

  • Aquarium. It is optimal to maintain a proportion of 4 liters of liquid per adult. Danios are exclusively schooling fishes, therefore they should be kept in 6-7 copies. Moving individuals should choose an elongated aquarium. It is mandatory to cover the tank with thick glass. Before the glass should be at least 5 cm of free space, this will reduce the injury of active individuals.
  • Aeration and lighting. Fish prefer well-lit aquariums with constant oxygen saturation. Especially important is blowing air with increasing water temperature.
  • Compatibility. Danio fish get along well with tetras, swordtails, platies, catfish and cockerels. Contact with goldfish, eels, shrimps and cichlids should be restricted.
  • Danio fish get along well with tetras, swordtails, platies, catfish and cockerels

    One of the important points of keeping pets is information about the main ailments and methods of their treatment. Most often individuals of this species face the following diseases:

    1. Trichonosis. The origin is ordinary ciliates. Domestic fish rub against objects and plants inside the vessel. The body is gradually covered with gray bloom in the form of flakes. The first step is to increase the aeration of the water tank. It is recommended to increase at this time the water temperature to 30−31 degrees. Adding a minimum amount of salt to the water has a beneficial effect. The recovery period can last from 7 to 30 days.
    2. Plystophorosis. The first symptom is the appearance of vague white specks on the body of the fish. In the absence of therapy, the spots turn into ulcers, the fins become sloppy, disheveled. The danio organism is depleting its resources. The first measure of help is the complete disinfection of the aquarium and the ground. Bleaching powder or a 5% hydrochloric acid solution will serve this purpose well.

    During the feeding of fish, a methylene blue solution, Trichopol or Erythrocycline should be added according to the instructions.

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    Zebrafish aquarium fish are widely used as model organisms in order to study the development of vertebrate creatures and the functions of their genes. As an object of scientific research, they were proposed by George Straysinger. After this, the importance of the model has been repeatedly confirmed by numerous genetic studies.

    Representatives of the species are few fish that have been in space orbit.

    The advantages of studying individuals over other vertebrates are:

    • High rate of embryo development and passage from egg to larva in less than three days.
    • Strong, hardy, transparent embryos develop outside the womb, which greatly facilitates the process of manipulation and observation.

    Members of the zebrafish species are few in space orbit.

  • Because of the high speed and convenience of work, danios can act as models for the phenotypic screening of drugs being developed.
  • Several systems of fish interact with low molecular weight compounds in a manner similar to humans.
  • Study of the toxicity of drugs and pharmacokinetics help to get only reliable results.
  • Some methods of genetic engineering allow us to develop lines that partially imitate various human diseases.
  • The danio species discovered at the beginning of the 20th century is widely distributed among modern fish breeders. An interesting fact is the change of color of the semi-transparent body of the fish depending on the surrounding conditions.

    In addition to the remarkable appearance, individuals evoke a wide scientific interest due to the ability to rapid genetic changes.

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