Danio is the most popular variety of aquarium fish, notable not only with a spectacular appearance, but also amazing unpretentiousness. Fucking a bright and friendly pack in the aquarium, they enliven the homely atmosphere, bring beauty and harmony into it.
It is worth considering what kind of varieties can decorate the homemade reservoir, how to choose fish, how to keep and breed them, with whom they can get along in one aquarium.
Description
Danio - the genus of small bitter fish belonging to the carp family. The initial habitat of these charming creatures are freshwater waters of Southeast Asia. The average dimensions of adult individuals vary in the range of 4-4.5 centimeters. Some copies are capable of reaching 6-9 centimeters in length. Dimensions, body painting, color and shape of fins depend on the form of fish.
Many varieties of Danio got widespread in aquarium. They are not too attractive to care, easily multiply in captivity. To date, scientists have derived a number of interesting breeding forms with atypical for fish of this kind of coloring, dimensions and forms of fins. A strong impression produces one of the selection forms of Danio - Transgenic (Glofish).
Danio of this form has a spectacular fluorescent color, luminous in the stream of ultraviolet.
One of the bright advantages of aquarium Danio is their peace-loving and non-conflict. They are energetic, very movable, cheerful. The remaining inhabitants of the aquarium Danio are neutral, without showing aggression. As with many other small representatives of the aquarium fauna, the life expectancy of fish is not too large. The average life expectancy in small individuals is about 3 years, in large (9-10 centimeters long) - about 6 years.
Views
The aquarium is popular with various types of these charming fish. All of them differ from each other interesting and original coloring, sizes, body shape and fin.
- Pearl Danio. - A variety of beautiful freshwater fish, the natural habitat of which are the water area of the Malay Peninsula and the island of Sumatra. The color of their bodies depends on the region of origin. This type of Danio meets several basic color forms. The most common color is overflowing bluish, with an orange-red stripe running along the body and reinforcing the color at the tail fin. The average dimensions of adults are 4.5-5 centimeters.
- Firefly (or Hopra) - Variety of Danio, considered the most minor representatives of a kind. The average sizes of their body rarely exceed 2-3 centimeters. Body coloring - gray-olive with a metallic tide. Along the body in the top under the dorsal fin passes a bright orange-red strip. Across the body along the midline there are dark gray stripes. Finns are translucent. The dorsal fin decorate the longitudinal orange-yellow band.
- Dunguil - Very beautiful variety of Danio. In a natural habitat, they are capable of growing up to 15 centimeters in length. In captivity, these unusual fish usually reach 8-9 centimeters. Their characteristic feature is a pair of elongated mustaches going down from the oral gap. Fish color varies from pinkish brown to silver-blue with a metal tide. The most common color option is silver or pinkish olive. Feds - translucent and most often light shade. Closer to the Zhabra, Danio Dunguil usually houses a small rounded note of the dark color.
- Kerry. - A variety of Danio, inhabitant in the freshwater reservoirs of the southern part of the Malay Peninsula, as well as in the streams and rivers of the nearby Islands of Phuket and Ko Lanta. The size of the body of adults is 4-4.5 centimeters. Coloring depends on the habitat of individuals. The most common color options are bluish yellow or yellow-olive with a silver tide. Along the body of these Danio, there are two parallel winding lanes of a light yellow shade.
- Point Danio. - A variety of bitter fish found in freshwater waters of Myanmar. Visually, this species resembles other well-known representatives of this kind - Danio-Roerio. The average dimensions of adult dotted Danio are about 4 centimeters. The painting of these fish is spectacular - white-golden sides and an olive brown back. Turquoise-black stripes stretch along the body.
The lower part of the body and the anal fin is littered with small dark dots (hence the name of these fish).
- Danio Roerio - One of the most popular varieties of fish belonging to this family. The magnitude of adults reaches 4-4.5 cm. The body is elongated, slightly elongated, covered with alternating turquoise-blue and light-golden stripes. Translucent fins, bright. The tail and the anal fins are striped, repeating body coloring.
- Very unusual is a gene-modified form Danio Roerio. Wearing the name Glofish. An amazing feature of these colored aquarium fish is their fluorescent coloring, glowing in the stream of ultraviolet. At the same time, the color of the body of the fish depends on which alien proteins are present in its genotype. So, the presence of jellyfish DNA provides an individuals of a salad color, and the Red Coral DNA is purple.
- Other interesting representatives of breeding forms are Wellegal Roerio . Distinctive features of these fish are a beautiful vellegal tail and fins. The length of the tail and fins in adult individuals can reach 2 or more centimeters.
- Pink Danio - One of the most beautiful representatives of a kind. It is customary to distinguish between true and artificially derived pink Danio. For true, a pale pink with a metal sampling is color, for the artificially derived shape - a saturated pink body color, diluted by longitudinal silver stripes. The magnitude of adults can vary from 4 to 5 centimeters.
Important! Thanks to the experiments conducted by breeders, many forms of multi-colored Danio have now been obtained. In this manifold, you can find fish of almost any color and colors - red, orange, yellow-lemon, turquoise-pearly and even leopard.
How to choose?
When choosing fish, pay attention to their behavior. This criterion often allows you to distinguish healthy individuals from patients. For fish, Danio is not peculiarity, lethargy and low-speedness. These representatives of the aquarium fauna are always distinguished by increased activity, savory, energetic. Before buying fish, it is necessary to carefully examine. Feds must be integer, smooth and straightened.
Compressed and deformed fins often indicate that the fish is sick.
The body of the fish should have a color corresponding to its variety. In addition, when inspection, signs of any diseases should not be detected. In particular, it may indicate a strange raid on the body and fins, white grains, wounds, thighs. A healthy part has a smooth, slightly rounded, but not swollen abdomen. Fallen or repeated abdomen can be a sign of diseases of the digestive system.
Danio should not be purchased, which have the following features:
- Often or with an effort to swallow air;
- fell on one side;
- do not rise from the bottom;
- greedily swallow air, swimming at the surface of the water;
- Dreaming on aquarium or continuously spinning in one place.
Containing rules
Despite the fact that Danio is considered unthieving fish, their health and life expectancy depends largely on the conditions of content. So, trying to provide pets to the most comfortable existence, you should pay attention to several criteria.Capacity aquarium
In order for the inhabitants of the domestic water bodies, the aquarium should be quite spacious. Experienced aquarists argue that one particular Danio should account for at least 4-5 liters from the total tank. Thus, The minimum capacity of the home reservoir, allocated to the content of the Danio's pack of 5 small individuals, should be 25-30 liters. . In addition, when choosing a suitable tank for these active fish, it is necessary to prefer sufficiently long structures with a lid. It is important to take into account that these fish are very mobile and capable of jumping out of the reservoir during the game.
For this reason, the aquarium must be reliably close from above.
Priming
The most effectively will look Danio in the aquarium, the bottom of which covers the dark soil. It can be small river or sea stones rounded shape, black volcanic sand. Before filling the tank, the selected type of soil should be disinfected - roll on fire or boil.
Lighting
Experienced aquarists recommend when arranging aquarium for Danio worry about proper illumination of the tank. The duration of the daylight for these fish should be at least 12 hours. You can solve the problem with the lighting of the aquarium using the installation of the lamp or the lamps in the tank cover.
Water parameters
The temperature of water is considered the most comfortable for these fish, varies in the range of + 18- + 23 °. Control the temperature of the water should be using aquarium thermometer. The acidity of water should vary within 6-8 pH, rigidity - 5-18 °. It should be remembered that These fish does not fit rigid water and water with a large number of third-party impurities. . Once a few days it is necessary to conduct partial renewal of water in the tank.
When implementing this procedure, the water replacement is made by about a third.
Food and power supply
Most preferred for these fish are live foods. Unlike catches, preferring to eat from the bottom, the movable Danio is breeding at the surface of the water. For this reason, for them it is worth picking floating varieties of feed. Moth, Daphnia, Cyclops are perfect for these fish, both in fresh and ice cream. By purchasing these types of feed, you should pay attention to the quality of the product.
Spoiled live feed, having traces of decomposition and unpleasant smell, can not be given pets.
I am pleased to eat these fish and dry sows. In the range of modern shops, you can find various types of dry foods enriched with protein, vitamins, carotenoids. The most popular brands are Tetra and JBL. To feed these charming creatures is recommended twice or three times a day with limited portions. Unsell food remains should be removed from the aquarium - so water will remain pure longer.
Aeration and filtering
Despite the fact that Danio belongs to unpretentious aquarium fish that can hold out in the conditions of a shortage of oxygen in water for a fairly long time, the air is still needed. To a greater extent, it needs fish contained by a pack in a close aquarium. So that the pets do not suffer from the lack of oxygen, when the aquarium arranges, it will be necessary to install aeration equipment.
Water aeration is extremely necessary and when the temperature level approaches the maximum limit. With the increase in temperature, the volume of oxygen dissolved in water is significantly reduced, which is negatively reflected on the well-being of the inhabitants of the aquarium. Installing filters will allow longer to maintain purity and freshness of water. This will help reduce the frequency of cleaning, which often causes stress and uncomfortable feelings from fish.
Plants and decor
Make an aquarium with bright fish Danio even more effectively allow beautiful scenery and plants. Coryga, grottoes and caves, trees branches, sinks and corals, ceramic and glass products can be used as decor. These items not only give the home reservoir, but also provide shelter fish. It is noticed that Danio, frightened something (people, loud sounds, light flashes), hides in shelter or among plants. If there will be no others in the aquarium, it will aggravate stress for all dwellers of the home reservoir. In a tank with Danio, almost all known types of water vegetation can be planted.
An exception is only those representatives of aquarium flora that have a tough foliage with sharp and cutting edges.
Breeding
In the reproduction of Fish, Danio usually does not arise difficulties. Frequently often, these charming creatures produce offspring without any third-party stimulation. However, in some cases, it is possible to artificially create conditions for them to continue the genus. It should be clarified that Danio is not novelly fish, and their offspring develops from caviar.
To get the offspring from Fish Danio, it is necessary to jerk a couple of different parties in a spawning (You can sit down 1 female and 2 males). To distinguish fish-boys from fish-girls allows their size and brightness of the color. As a rule, females are always slightly larger than males, and their painting is more pale. In females, ready to continue the genus, the abdomen will be more rounded and enlarged. The males, ready for reproduction, will differ from the rest of the individuals more intense.
Before stimulation of spawning, a separate aquarium should be prepared. So, on the bottom of the tank that performs the function of the spawning unit, it is necessary to lay a layer of soil or lay a grid with small cells. Low water plants with thick, shallow and soft foliage are suitable. The bottom arrangement in this case is necessary to disguise the caviar, which adult individuals after spawning can eat.
The reservoir up to the middle is filled with water, the aerator is connected to it and increase the water temperature to + 24 °. After that, the temperature is gradually lowered, topping the reservoir water in the reservoir. Reduce the temperature is necessary to + 20- + 21 °. Such conditions contribute to spawning stimulation, which usually occurs within 1-3 days. After the female marks the caviar, her and males transplanted into the overall aquarium to the rest of the fish. In the unservation again increase the temperature of about + 27- + 28 ° C. This will speed up the process of ripening eggs.
For about 2-3 days, tiny long larvae will begin to appear from the cheek. It should be borne in mind that they are quite rapidly growing and turn into fry, and then in full-fledged individuals. Throughout the process of turning the larvae in the fry (and hereinafter, for the development of the fry), the received offspring of Danio is fed by egg yolk, infusories, Artemia. As soon as the fry is growing a little and fixes, they can be translated into the same food that adult individuals eat.
We can only produce young aquarium in the overall aquarium after the fessels reach the sizes that do not allow them to eat.
Compatibility with other inhabitants of the aquarium
Peace-loving and friendly yield of fish Danio allows them to be easy to get enough in a home water branch with a variety of aquarium fauna. They are excellent neighbors for any small and unsubstantial fish. So, the following fish will be good neighbors for Danio:
- Guppy;
- mallons;
- TERNECTION;
- Small catches;
- neons;
- pecilia;
- guri;
- Rainbow fish.
Danio with the scalaria, with whom they can smoothly exist throughout life. The only minus aquarists believe that during the period of the marriage games and the expectations of the offspring of the scalar can behave more aggressive towards Danio. Such behavior is due to the instinctive aspiration of the scalar to protect its future offspring. They are not suitable as the neighbors for Danio convex and conflict Barbus, who chase peaceful fish throughout the aquarium, are bitten and damaged fins. It is undesirable to contain Danio and with shrimps, which is a delicious delicacy for these fish. In addition, experienced aquarists argue that the presence of Danio in one tank with shrimps causes severe stress in the latest.
It is not recommended to contain Danio and with freshwater aquarium crabs, and with eels.
Not suitable as neighbors and goldfish, which exceed the Danio largest, and also require completely other conditions of content. In the event of a conflict, the goldfish can injure Danio and even kill him. In addition, goldfish most comfortably feel in cool water, while Danio prefers warm water. It is categorically imputed to Danio Fish with large and / or predatory representatives of aquarium fauna. So, the deadly danger to these peace-loving creations represent medium and large types of aquarium soms, astronotuses, cichlids, discs. Once in one tank with these kinds of fish, Danio will not have chances to survive.
More about the departure and content of fish Danio, see the video below.