A telescope is a kind of goldfish, the most prominent feature of which is the eyes. They are very large, bulging and prominent on the sides of her head. It is for the eyes that the telescope got its name.
Large, even huge, they nevertheless see poorly and can often be damaged about the objects in the aquarium.
One-eye telescopes are a sad but frequent reality. This and other properties impose certain restrictions on the content of the telescope.
Habitat in nature
Aquarium fish telescopes in nature do not occur at all. The fact is that all the goldfish were bred a long time ago from a wild crucian.
This is a very common fish that inhabits stagnant and slow-moving reservoirs. rivers, lakes, ponds, canals. It feeds on plants, detritus, insects, fry.
The birthplace of goldfish and black telescopes is China, but around 1500 they came to Japan, in 1600 to Europe, and in 1800 to America. The bulk of the currently known species, including the telescope, was developed in the East and has not changed since then.
It is believed that the telescope, like the goldfish, was first bred in the 17th century in China, and was called the dragon eye or dragon fish.
A little later, it was imported to Japan, where it received the name "Demekin" (Caotoulongjing) by which it is still known.
The body of a telescope fish is rounded or egg-shaped, as in a veil tail, and not elongated, as in a goldfish or shubunkin.
As a matter of fact, only the eyes differ from the telescope from the valehvosta, otherwise they are very similar. The body is short and wide, also a large head, huge eyes and large fins.
Now telescopes are found in very different shapes and colors. with veil fins, and with short, red, white, and most popular. black telescopes.
Telescopes can grow large enough fish, about 20 cm, but in aquariums, as a rule, less.
The life of the telescope is 10-15 years, but there are cases when they live in ponds and more than 20.
The sizes vary greatly depending on the type and conditions of detention, but telescopes are not less than 10 cm in length and can be more than 20.
Difficulty in content
Like all goldfish, a telescope can live at very low temperatures, but it cannot be called a suitable fish for beginners.
Not because he was particularly picky, but because of his eyes. The fact is that they have poor eyesight, which means that it is harder for them to find food, and it is very easy to hurt their eyes or damage the infection.
But at the same time telescopes are very unpretentious and undemanding to the conditions of detention. They live well in the aquarium and in the pond (in warm areas), if the water is clean and the neighbors do not take away their food.
The fact is that they are slow and poorly seen, and more active fish can leave them hungry.
Many contain telescopes or other goldfish in round aquariums, alone and without plants.
Yes, they live there and do not even complain, but round aquariums are very poorly suited for keeping fish, impair their vision and retard growth.
Feed telescopes is easy, they eat all kinds of live, ice cream and artificial food. The basis of their feeding can be made artificial feed, for example, pellets.
And additionally, you can give bloodworms, artemia, daphnia, pipemaker. Telescopes need to take into account poor eyesight, and they need time to find food and eat.
However, they often dig in the ground, raising dirt and dregs. So artificial feeds will be optimal, they do not burrow and slowly disintegrate.
Content in an aquarium
The shape and volume of the aquarium which will contain the telescopes are important. This is a big fish that produces a lot of waste and dirt.
Accordingly, for the maintenance of telescopes need a fairly spacious aquarium with a powerful filter.
Aquariums of a round shape are absolutely not suitable, but classic rectangular ones are perfect. The larger the surface of the water in your tank, the better.
Gas exchange occurs through the surface of the water, and the larger it is, the more stable this process is. As for the volume, it is better to start from 80-100 liters for a pair of fish, and add about 50 liters for each new telescope / goldfish.
Telescopes produce a huge amount of waste, and filtration is absolutely necessary.
It is best to use a powerful external filter, only the flow from it must be started up through the flute, since goldfish are not important swimmers.
Mandatory weekly water changes, about 20%. As for the water parameters, they are not very important for telescopes.
Soil is better to use sandy or coarse gravel. Telescopes are constantly digging in the ground, and quite often swallow large particles and die because of this.
You can add decor and plants, but remember that the telescope’s eyes are very vulnerable, and eyesight is weak. Make sure all the elements are smooth, they have those sharp or cutting edges.
Water parameters can be very different, but ideally it will be: 5. 19 ° dGH, ph: 6.0 to 8.0, and the water temperature is low: 20-23 C.
Telescopes are quite active fish that love the community of their own kind.
But for the general aquarium, they are poorly suited.
The fact is that they: do not like high temperatures, are slow and dim, they have delicate fins, which neighbors can tear off and they trash a lot.
Who does the telescope get on with?
It is best to keep telescopes alone or with related species with which they get along: veiltails, goldfish, shubunkins.
It is impossible not to contain them with: Sumatran barbus, ternitse, denison barb, tetragonopterus. It is best to keep telescopes with related fish. gold, veiltails, oranda.
It is impossible to determine the sex of telescopes before spawning. During spawning, white bumps appear on the head and gill covers of the male, and the female considerably rounded from the calf.