The Zebra Danios is common in many aquariums because there is a wide variety, it is also frequently used for scientific research.
A curious fact about this is that it was the first vertebrate to be cloned. This species is also known by the names of little flag or zebrafish.
Its scientific name is Danios Rerio is an actinopterygian pesticide fish. And belongs to the order of the Cypriniformes and its family is the Cyprinidae finally its genus is Danios.
The zebra danios are a species that reaches up to five centimeters in length. Its body is also elongate fusiform, has a single dorsal fin. A rigorous mouth that is direct upward is caused by the protrusive lower jaw.
With a pair of fine barbels, the only way to observe these chins is that the animal is in vertical form, its eyes are centrally located.
This fish does not have teeth or stomach, it feeds using its thorny gills by sucking the food. On the sides of this is observe five to nine dark blue stripes these are longitudinal.
These fringes leave behind the operculum and reach the end of the fish that includes its tail of this zebra aspect comes its name.
The operculum is bluish and the ventral area of white color with the pinkish tone the zebra danios is transparent.
This feature allows scientists to visualize how their experiments evolve without inconvenience. The species presents sexual dimorphism, males and females are different in both size and color.
The female is usually larger than the male, it has a silver background color on its body.
For its part, the male is golden tones I leave a video for you to learn to differentiate the sexes of these fish.
Other specimens of the zebra species:
There are specimens that have been modified by their genetics creating fluorescent colors yellow, green, pink, red and blue.
These zebra danios is called Glofish and there are also Albinos. The leopard danios, previously known as Danios Frankie, is a zebra danio that arose due to a mutation of a pigment.
The patterns of the pattern are not similar to the zebra is similar to the spots of a leopard, along with subspecies of long fins.
It is obtained through selective programs that breed them for the aquarium trade. Several transgenic and mutant zebra danios specimens were stored at the China Zebra Danios Resource Center.
Hybrids between different Danios species can be fertile.
This species is native to the streams located in the southeast of the Himalaya region.
They are also found in India, Pakistan, Bangladesh, Nepal, and Burma.
In some places, the fish is found inhabiting streams, canals, ditches, ponds, bodies of water where their movements are not fast or standing water. You may also like to read Rainbowfish
They also live in rice fields, these places need water damming and the creation of an irrigation system.
And they use the habitat of the zebra danios to create them in this way the human modify the area of the animal even though it stays living in the area since this species tolerates the human being.
They are capable of surviving and reproducing where there is ample presence of people. Due to flooding caused by rain, the zebra danios have adapted to multiple temperatures.
They can live in temperatures from six degrees Celsius to thirty-eight degrees without any problem.
In the USA Also, this fish is found, its introduction to this habitat was by deliberate liberation or by escaping from Fish Farms.
It has seen specimens in California, Connecticut, Florida and New Mexico in South America there is a specimen.
The zebra danios is a very active animal also social and diurnal social behavior is gregarious are handled in school.
It is a natural feature of the fish so are the social hierarchies that are created between the male and the female.
This domination is established through aggressive behavior that includes biting and persecution.
The dominant fish are responsible for establishing mating territories. These territories should be close to the spawning grounds and also monopolize food.
These fish form groups of individuals that swim in unison.
And it is possible to change direction instantly without colliding between them maneuvering as a single body.
This is done in front of a predator when the fish feels in danger, and thus scare and dodge any possible attack.
The groups that carry out this action are call Schools. The zebra danios show warning signs when it perceives a predator that it does through its olfactory or visual sense.
Their behavior becomes agitated intensively, shows aggressiveness and reduces the feeding frequency. You may also like to read Angelfish
It is an omnivorous fish that get much of its food in the columns of the waters. They usually eat zooplankton and marine insects.
Usually, these species feed on the surface of the water devouring terrestrial insects and some small arachnids.
One of the favorite foods of this species are the larvae of mosquitoes. They also eat worms, a small crustacean, phytoplankton. They eat a great variety of other foods if their main food sources are not available.
From three to six months of age the zebra danios reach sexual maturity, they are able to reproduce throughout the year.
The female places up to 200 eggs, the development of the embryo is very fast. The main organs appear within the first thirty-six hours after fertilization.
And the embryo is seen in its beginnings as a bud with a giant cell in the top then it is divided into two.
This same action is repeated until it reaches thousands of small cells. These cells migrate towards the sides of the yolk and start the formation of the head and tail.
The latter grows and separates from the body with time the yolk becomes smaller since it is responsible for feeding the fish.
These fish are one of the easiest breeding species because they are very resistant individuals.
They are cheaper fish than the Amazonian circles. These fish are calm and can coexist with almost all species.
These characteristics make them an excellent option to create community aquariums. It is important to keep in mind that this species is handle in school for this reason the breeder must have at least a group of six individuals.
It is necessary to have them in an aquarium where they have enough space.
And that space does not present disadvantages when swimming since these fish are very good and fast swimmers.
This breed spends much of its time doing this activity. The quality of the bottom of the aquarium is an important factor is essential to have a biological filter.
No plants should be placed in the central area where it is a nuisance for the movement of the zebra danios.
The temperature should be around 28 °C, this is considered the ideal temperature. However, this breed survives at temperatures between 20° and 29 °C.
With these temperatures, this breed can live relatively well. Even so, when temperatures are lower than 27 °C, it seems that their life expectancy is lower.
Thanks to this fish there have been advances in the fields of biology. And it has developed, the oncology, the toxicology, the reproductive studies, the teratology, the genetics, the neurobiology, the environmental sciences.
As well as research with stem cells and regenerative medicine and evolutionary theory.
As a reference: Wikipedia