Главная 7 Aquarium fish 7 Wedge Rasbor: a complete guide to the content

Wedge Rasbor: a complete guide to the content

Klinopyatnisty rassom so common in pet stores and popular with aquarists that its common name migrated to the everyday name. This interesting aquarium fish originates from the South-Eastern regions of Asia, in particular, the reservoirs of Thailand, Java, Klimantan, Sumatra and Malaysia are home to its habitat.

Hydrobiont is widely distributed in ditches and ponds with soft water with a weak acid reaction.

For the first time in Europe, the fish got in 1906, and 5 years later it was brought to Russia. For a long time, cuneopathic rasboru was considered capricious and problematic in keeping aquarium fish.

In addition, there were some problems with its breeding in the conditions of the aquarium. In the process of keeping fish in domestic aquariums, the razbor began to gradually adapt.

The first attempts at breeding were recorded in Europe, and when these attempts were crowned with success, the fish began to be bred in the late 50s already in the territory of the Soviet Union.

However, despite the long practice of keeping and breeding fish in an aquarium, domestic aquarists still have some difficulties in the breeding process. To get rid of possible problems, you should pay close attention to the contents of the rasbor in their aquariums.

Fish prefer old water with a temperature of 24 to 25 degrees, the hardness should be within 12 – 15 degrees and the active reaction of the environment 6.5 – 7.0 pH.

Like most aquarium fish, wedge-spotted rasbor loves clean water, rich in oxygen. The aquarium substrate is preferred to be dark in color, the light in the aquarium is not bright. You should select an aquatic plant from the accounting of hydrochemical parameters of aquarium water so that fish and plants could develop without damage.

Among the rich variety of aquatic plants, it is best to use different variants of cryptocoryne, multi-seeded hygrophilus, Thai fern, Javanese moss, sinnema. In addition to the thick planting of hydrophytes, there should be a lot of free swimming space in the aquarium, especially the upper water layers.

In terms of mobility, the cuneopus rasbor is second only to barbs and danios, respectively, this moment you should take into account during feeding. In food, a hydrobiont is unpretentious and eats with pleasure both dry and live food floating in the water column. The only caveat – picks up from the bottom without much enthusiasm.

For pets to be healthy, feeding must be varied. It is best to feed daphnia, cyclop and decapsulated Artemia.

But the bloodworm and the strawberry it is better not to give often, optimally – 1 feeding per week. In addition to live food, fish need to bring in plant food from the diet: white bread, steamed oatmeal, boiled semolina, scalded dandelion leaves or lettuce, as well as vegetable food sold.

For the most part, the success of breeding hydrobiont depends on the proper preparation of fish-producers. First you need to buy fish from various aquarists (several stacks of fry).

Please note that fish must be of different age with a run of several months. Each individual flock is best kept in a separate aquarium.

Males of cynopyatnous rasbor ripen somewhat later than females, which by 6–7 months of life already show the first signs of mating games. The females, having spread their fins, approach the males and begin to flirt with them, inviting them to the ceremony.

After that, they swim on the leaves of aquatic plants up the abdomen and create an imitation of throwing eggs. Unlike females, males of the same age are not yet ready for breeding.

There are cases that males take part in the imitation of clutch, but no success or results from such games.

In order to produce a complete fertilized roe, the age of the males must be about 9 months with a bright color. It is preferable that the males were from different aquarium farms.

Producers must be kept separately for 10 days at a temperature of 23 – 24 degrees and fed abundantly with bloodworms, enthitheus and cyclops. Sprouted wheat germ, which is rich in vitamin E, has recommended itself as a vegetable feed.

Now is the time to talk about the proper preparation of water for reproduction. Best of all for these purposes is suitable old water and an already running aquarium with a well-established biobalance. It must be passed through activated carbon and ¼ parts of distilled tap water must be added to it in order to reduce the rigidity to 5 degrees.

The necessary acidity of 6 – 6.5 pH is best obtained with orthophosphoric acid or peat broth. The color of the water should resemble freshly brewed tea.

Do not forget about the clock aeration of aquarium water.

Approximately a week before spawning, a separator grid, a heater and aquarium plants are placed in a grater. Even taking into account that spawning occurs on the inner part of the leaf, part of the roe will still settle to the bottom.

If the separator net is absent, the parents will quickly eat the spawn. It is best to use a Thai fern as a substrate for spawning, as it has a beneficial effect on the quality of aquarium water.

In addition, this plant can withstand long-term shade and poor lighting in the aquarium.

However, you should keep in mind that damaged fern leaves will release toxic substances into the aquarium water, which can kill all the eggs, or spawn.

The volume of spawning aquarium directly depends on the number of fish-producers selected for spawning. To get the most positive result, it is better to use the schooling and double spawning.

During the spawning period, the barge can be up to 10 liters in volume, in the case of schooling (up to 10 fish), then the spawning volume should be at least doubled.

In the case of pair spawning, caviar will be less and will be used, as a rule, when you are 100% sure of the quality of selected producers. However, during the schooling spawning, it was observed that not all females may participate in the spawning process.

Males will look after “icy” females more willingly than passive ones. The rest of the females will have to decant the eggs to prevent the development of a cyst.

Among males, too, everything is not so smooth: who is involved in spawning, and who eats caviar.

It is best to plant fish for spawning in the evening, an hour over the floor before turning off the lights in the aquarium. The last feeding of fish should be in the morning of the same day, when the fish are planted to spawn. If you have this opportunity, then keep a few pairs of fish in reserve.

Further, in the spawning room, the water temperature rises to 27 degrees, aeration is weakened, or it is completely turned off. These two factors are spawning incentives.

Spawning usually begins the next morning, but there are times when it lingers for several days.

The reasons for the delay in spawning are mainly either the unavailability of the fish, or any external factors: water temperature, its hydrochemical composition or atmospheric pressure. As a rule, in bad weather and low atmospheric pressure, fish refuse to spawn.

If reproduction has not begun within a few days after planting for spawning, it should be stimulated.

There are several ways to stimulate producers to spawn. The first way is to plant in the aquarium for spawning males from another group and partial replacement of water of similar composition and temperature several degrees higher.

However, the most effective method is to add about a liter of water from the sprinkler, which recently spawned.

The initiator of the mating games is the female, who makes the first attempts at courtship, but soon, the initiative passes into the hands of the males. During active courtship, the female selects the appropriate leaf of the plant where the laying will be.

After that, she turns her belly up and glues her calf to the bottom of the piece. The male near the female immediately sprinkles her eggs with her milk.

In one approach, the female sweeps up to 10 eggs as much as possible, and there are no cases at all.

However, not all eggs remain stuck to the leaves of plants. Quite a lot of eggs settles on the bottom and sticks to the separator grid.

Fortunately, this does not affect its development. But on the walls of the aquarium fish caviar lay very rarely.

During schooling spawning of inactive males and non-spawned females, it is best to replace them with other fish. Rasbora are so keen on spawning that they do not pay special attention to the intervention of an aquarist, only if it is not long.

After some time, reserve producers adapt and take an active part in spawning. Spawning period is about three hours.

In 3 hours, the ready-to-breed pair can sweep up to two hundred eggs, but, as a rule, their number does not exceed 100 – 150 pieces.

When the spawning is over, the producers are better to sit back in their aquariums, since the result is still unknown to you. In addition, you should not forget that females need to decant the remains of caviar.

Do this procedure extremely carefully and in no case take out the fish from the wet net. Alternatively, the fish can be wrapped in cotton wool. With one hand, hold the head to itself, and the other hold with wet cotton along the belly from head to tail, decanting eggs.

In words, it takes a long time, but the operation should not take longer than a minute, since drying the gills is fatal for fish.

I would also like to note that females rasbor often stutter. Accordingly, periodically fish need to be planted to spawn, even if you did not plan it. This allows you to protect the fish from cystic formations.

If the cysts start, the fish die very often. Unlike other fish, the eggs of the cuneiform rasbor are not afraid of bright light.

However, it is better not to allow it in order to avoid non-standard situations. In addition, the caviar rasbor is not afraid of the flow of water, which is provided by a working filter.

There are cases when the spawn immediately turns white after spawning. This is due to the wrong choice of producers or poor quality of their preparation (inactivity of males or over-ripe caviar in females). There are times that the eggs remain transparent after spawning, and after a few hours they also whiten and dissolve in the aquarium.

This is due to the wrong hydrochemical composition of water or the presence of blue-green algae on the leaves of a fern, which the fish have chosen as a substrate for spawning.

There is also a third option: the quality of the eggs (good or bad) influences the spawning result. What is most interesting, the ratio of bad and good caviar can vary greatly.

If transparent caviar is seen among unfertilized caviar, then it makes sense to drain some of the water before it becomes cloudy into another container, where you also need to place the plant on the leaves of which there are eggs. In the same container, it is necessary to transfer transparent eggs that have settled to the bottom, which are collected using a glass tube.

If there are few bad eggs, leave everything as it is. At the very least, you can add methylene blue to the water before staining the water in a bluish color.

A day later, yellow larvae are born from eggs. They hang on the leaves of plants and the walls of the aquarium. Shaking the plant a little, you can gently pull it out of the aquarium with the net.

So that the water in the aquarium does not deteriorate, you can add several coil snails to the aquarium, which will eat the spoiled eggs. You should not worry about the larvae, the snails do not touch them, and if they touch, the larvae instantly swim to the side.

After that, the water level in the aquarium is lowered to 7 centimeters.

Four days after spawning and the day before it, when the larvae begin to swim, a little feed (rotifers and infusoria) can be introduced into the otsadnik. The nymphs of Artemia immediately take nests on the next day. When caring for the larvae of wedge-spotted rasbori udon, use one interesting proven method, which was invented by the Leningrad aquarist V. Lamin.

Water with the larvae gently poured into an enamel pot and spins. When the water calms down, the larvae will spread throughout the container, and all the garbage will settle in the center, which is easily collected with a hose or a pear.

While the larvae are temporarily relocated to another vessel, the bailout must be well washed without using detergents. At the end of the harvest, water with the larvae is poured back into the trough, where you also need to pour a little more hard water of the same temperature.

Upon completion of all activities fry need to feed. The above operations transfer the larvae rasbor calmly, the main thing is to ensure that they do not stick to the vessel walls.

If the care of fry quality, they grow very quickly. A few weeks after the larvae blur, dark spots appear on the sides, and a black edging appears near the tail. 10 days after hatching the fry already calmly take small daphnia.

But it is better not to feed the cyclops, as if they fall into the blender, the cyclops can harm the fry. These small crustaceans can be fed to the fry only after reaching one month of age.

After a few weeks, when the length of the fry will be about one and a half centimeters, you can add in the diet finely sliced ​​tubule, which is given in meager amounts. Because of the stiff chitinous setae that dot the body of the worms, fish may develop intestinal diseases, or the fry will start to die en masse.

But, at the same time, it was repeatedly noted that after adding a pipemaker to the diet, the growth of cynopathous rasbor fry is significantly accelerated.

In addition, the amount of water in an aquarium influences the growth rate of fry. A few weeks after the spraying of the fry, they are transferred to more spacious aquariums with intensive aeration. Somewhere at 4 months of age, a black spot in males is pulled out in front of it, and by 7 months of life it will be at the level between the ventral and pectoral fins.

In addition to this feature, the males have a more slender body and wider ventral fins, as well as a bright color of the dorsal and caudal fins.

If you continue to plan breeding rasboris, then it is better to select mostly males from the first offspring. After 4-5 spawning at weekly intervals, the fish should be given a break within a month.

After this break, you may increase the number of white caviar in the first few spawns, in subsequent spawning the situation normalizes. After these spawning, it is already necessary to select females.

If you breed fish in subsequent generations, it is better to select producers from other aquarium farms.

Long maintenance of aquatic organisms in aquariums of domestic amateurs and frequent closely related crossbreeding led to the appearance of mutant forms. Back in the 70s of the last century, the first mentions about rasbor with veil fins appeared in aquarium magazines of foreign countries.

Domestic aquarists encountered fish with elongated dorsal and tail fins.

If your pets were raised in good conditions, they will rarely get sick. But, not to mention the most common diseases that affect cuneiform rasbor, I can not.

First of all, rasboru can easily catch a cold, and if the water temperature in the aquarium drops to 20 degrees, then the likelihood of fungal diseases is high. It is easy to treat them, the fish are placed in old aquarium water, the temperature rises to 30 degrees and powerful aeration is activated.

In addition, short-term baths in a weakly pink solution of potassium permanganate, which must be alternated with a solution of table salt based on the proportion of ¾ tablespoon per liter of water, are welcome. These simple measures will allow to relieve fish from fungi within 3 to 5 days.

But with Oodinios much more difficult, as to him the fish are more sensitive. In the case of detection of this disease in fish, used bitsillin-5.

As preventive measures, table salt in a proportion of a tablespoon of salt per 10 liters of water is added to the processors with a large number of young stock.

Avoid abrupt changes in the hydrochemical composition of aquarium water. If the fish are relocated from aquarium with soft and sour water to hard water with alkaline reactions, they will experience a shock that can be fatal.

Even if you transplant the fish in the shortest possible time in the water with a favorable environment, it can not always save the fish.

The closest relative of the crayfish rasbor is Hengel rasbor. The fish has the same shape, but smaller and not so bright color.

Coloring becomes more intense only during spawning. Unlike the relative, the razbor Hengel wedge-shaped spot is not clearly expressed and resembles a strip of black more than a wedge.

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