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Rodostomusy fish

maintenance, care, compatibility

Rhodostomus or red tetra – frequent visitor to aquaria

Rhodostomus or red tetra (lat. Hemigrammus rhodostomus) looks very impressive in the general aquarium. This is a beautiful fish with a bright red spot on the head, a tail fin in a black and white stripe and a silvery body.

At the same time, the rhodostomus is a rather small fish, about 4.5 cm, with a peaceful character, able to get along with any peaceful fish.

Tetra krasnonosoy (or krasnogolovaya tetra) it is called for coloring the head, but in the post-Soviet space the name rodostomus stuck more. Regarding the classification, there are still disputes, however, they are of little interest to ordinary aquarists.

A flock of rodostomusov will thrive in a well-balanced, overgrown aquarium. The best color and high activity, they show in the water close in parameters to that in which they live in nature. It is soft and sour water, often dark in color from organic matter.

Therefore, it is unreasonable to launch a rhodostomus in a newly launched aquarium, where the balance has not yet returned to normal, and the fluctuations are still too great.

On the whole, rhodostomuses are quite demanding on the conditions in the aquarium. Moreover, if something went wrong, you quickly find out about it.

Rhodostomuses will lose their bright color and will be unlike themselves. However, do not be alarmed if this happened immediately after purchase.

They just experience stress, they need time to get used to and pick up color.

Rhodostomus (Hemigrammus rhodostomus) is a tropical fish of the family Horacinus from the order of carps and the suborder of the haracinids. Rodostomus has many variants of its name: Red-Nosed, Red-headed or Red-Red Tetra, Tetra-Drunk Nose.

The captivating and peculiar beauty of this fish and attracts to get it, despite the difficult breeding.

Rodostomusy get along well with conflict-free fish similar in size to the fish, it is better to pick at least 8 neighbors. Optimal options: other members of the genus hemigrammus and Hifessobrikon, pencil fish, small barbs, catfish, iris, neons.

Rhodostomus will be a good neighbor to any peace-loving fish, because the pack does not have its leader and any tetra can be at the head of it.

Tetra has a unique property of changing its bright red color to pale, if the water in the aquarium is excessively polluted or contains an unacceptable chemical composition. Therefore, water should be replaced regularly: 30% of water should be added once a week, after which rhodostomus will acquire the same color.

Frequent replacement of water is also the prevention of “neon disease” or plistophorosis, from which it is difficult for the fish to recover. It develops as a parasitic sporozemic lodging in the muscles of the body, as a result of which gray-white nodules appear in the head of the fish.

Some scientists believe that this disease is incurable, so the aquarium should be subjected to thorough disinfection.

Rhodostomus sensitively reacts to any movements and it is hard for the transplant, which sometimes is fraught with the death of the fish. Careless fishing with a net causes the fish to be huddled face-down, which is why the tetra more often dies.

Adding peat extract to water can help relieve stress in fish. In the right conditions, their life lasts up to 6 years.

Rhodostomus is rather capricious and nervous fish, therefore its breeding will require special attention of the owner.

Breeding tetra will bring a lot of trouble to an inexperienced host, so rhodostomus is considered problematic compared to other aquarium fish. Proper care and maintenance speeds up the process of puberty in fish.

By the age of 8-12 months, it is possible to prepare a spawn and not make a mistake in selecting males, which must be seated from females a week before spawning. The accepted dimensions of the aquarium for spawning are 50/40/50 cm with a water level of 10 cm and a temperature of 25 ° C – 27 ° C.

Water hardness 2 ° – 4 °, pH 6 – 6.2. Be sure to place inside the grid for spawning. And from above spawning should be covered with glass, not the fish can jump out of it.

Protect eggs from fungal diseases by adding antifungal agents to the water.

The spawning period is up to 10 days and is an interesting sight: the males amusingly care for the females, swimming below and repeating all their movements. The number of males should be 2 times the number of females.

Rhodostomus rapidly overtakes the female and drives around the aquarium until she gets tired.

It is better to spawn in the evening, and spawning occurs in the morning. After that, the fish are deposited in order to avoid eating caviar and darken the aquarium.

The incubation period lasts a day or more, after which the water level is reduced, the net and plants are removed. In most cases, rhodostomus lays sticky eggs almost on the surface of the water. Usually the female brings up to 400 eggs.

The fry become active for 4 days, they should be fed live dust and infusoria. At the age of 3 weeks, they acquire the color, and by 2 months they reach the desired length.

Rapidly developing, rhodostomus spawns approximately 7-8 times a year, provided that strong pairs are selected.

Rhodostomus will be pleasantly pleasing to the eye with its beauty, and a benign care and careful breeding of these fish will add joy and pleasure to every aquarist.

Many aquarium owners like it when there is a lot of aquatic vegetation in their ornamental reservoir, which contributes to the creation of a biotope of warm rivers and lakes. Perhaps the most suitable inhabitant of such a tropical aquarium may be a small schooling fish called rhodostomus, whose peaceful and livable nature allows you to keep it with many other representatives of freshwater fauna.

Rodostomus – red tetra: content, compatibility, breeding, photo-video review

Order, family: haratsinovye.

Comfortable water temperature: 23-25 ​​° C.

Ph: 6.0-7.5.

Aggressiveness: not aggressive 0%.

Compatibility: with all the peaceful fish.


Homeland rhodostomusa – South America (River Rio Vaupes, Rio Negru).

This fish is also called red tetra or a flashlight.

The body of the fish is translucent with a greenish tinge. The fish has a wide red stripe on the head.

On the tail are three black stripes. On the upper part at the base of the tail there is an inconspicuous “flashlight”.

To distinguish the female from the male is difficult. Males, more smaller and slimmer.

By the nature of the rhodostomuses are peaceful, but very “nutty” schooling fish. An interesting fact about the fish is that under stress, its red color turns very pale.

Sometimes they fall into a “stupor” – dropping to the bottom.

Due to such timidity, only calm and peaceful fish can be neighbors.

The recommended volume of the aquarium for keeping a flock of rhodostomuses is 50 liters.

Comfortable parameters for water content: hardness 2-15 °, pH 6.0-7.5, temperature 23-25 ​​° C. Filtration and aeration are required, as well as a weekly substitution of up to 1/3 of the volume of water.

Feeding aquarium fish must be correct: balanced, diverse. This fundamental rule is the key to successful keeping of any fish, be it guppies or astronotuses.

Article “How and how much to feed aquarium fish” talks in detail about this, it outlines the basic principles of the diet and feeding regime of fish.

In this article, we note the most important thing – feeding fish should not be monotonous; both dry and live food should be included in the diet. In addition, you need to take into account the gastronomic preferences of a particular fish and, depending on this, include in its diet ration either with the highest protein content or vice versa with vegetable ingredients.

Popular and popular feed for fish, of course, are dry food. For example, hourly and everywhere can be found on the aquarium shelves of food company “Tetra” – the leader of the Russian market, in fact, the range of feeds of this company is striking.

In the “gastronomic arsenal” of Tetra are included as individual feeds for a certain type of fish: for goldfish, for cichlids, for loricarids, guppies, labyrinths, arovan, discus, etc. Also, Tetra has developed specialized foods, for example, for enhancing color, fortified or for feeding fry.

Detailed information on all Tetra feeds, you can find on the official website of the company – here.

It should be noted that when buying any dry food, you should pay attention to the date of its production and shelf life, try not to buy food by weight, and also keep the food in a closed state – this will help avoid the development of pathogenic flora in it.

Beautiful photos with rhodostomusy

Rhodostomus Video

Rhodostomus (from the Latin Hemigrammus rhodostomus) is an aquarium fish of 5-6 cm in size, in the wild its habitat is the Amazon delta. As a rule, males have a more elongated shape, while females have a belly slightly larger than males.

The color of the rydostomus fish does not depend on the sex: the bluish body, transparent belly, tail in black and white stripes, the head and gills of a healthy fish are crimson-red. The fish has black eyes, pectoral and anal fins are transparent, and the adipose fin is white-blue.

At first glance, there are no major problems with the content of rhodostomus The requirements are the same as for other types of charicin ones: water with a temperature of 20-25 degrees. The fish are quite mobile, and live in all layers of water and swim in flocks.

And the leader of such a flock is not, even the weakest fish sometimes is at the head. For the maintenance of rhodostomus, 2–15 ° of water hardness and a pH of 6–8 are sufficient.

In nutrition, they are not picky. Ideally, you should feed them with cyclops with the addition of herbal supplements.
Keep these fish need a flock. Rhodostomus feels great in the company of another 5-7 relatives or, in extreme cases, of small representatives of the Hemmigramus genus.

Rhodostomuses reach sexual maturity depending on the conditions in which they are kept for 8-12 months. The optimal size of the aquarium for spawning is 50 × 40 × 40 cm, and the water level in which should be about 10 cm. One of the main difficulties of breeding these fish is the correct selection of males.

Producers Before spawning necessarily planted. The diet during this period should include a variety of live food.

The temperature of the water should be raised by 1-2 °, the rigidity should be gradually reduced to 4-6 °, the pH level 6.6-6.8.
For breeding rhodostomus necessarily need a safety net. Water should be prepared by mixing in equal quantities rainwater, distilled and from forest puddles, adding peat broth. The prepared water must be carefully filtered and poured into the prepared aquarium a few days before planting.

Water parameters at this point should be as follows: hardness 2-4 °, pH 6-6.2, temperature 25-27 ° C. Spawning may be delayed, because of this, all stimulating factors must be taken into account before planting, in the first place – this is an indicator of atmospheric pressure.

If on the second or third day spawning did not occur in the rhodostomus fish, the temperature should be raised by 1-2 °, and then gradually lower it by 2-3 ° a day with simultaneous addition of distilled water with a dropper, having previously treated it with ozone. At first, the male actively pursues the female. It swims to the surface and hangs vertically under the sheet, as it were.

The male swims and adjusts to the female, and then bends it and twists. When they spread, 6-7 large transparent eggs fall onto the plants and the bottom.

Their number depends on the force with which the male will twist the female. This procedure occurs a couple of dozen times.
After spawning, the producers hide in the depths of the plants, their color becomes paler. At this moment it is necessary to deposit them and darken the spawn with dark paper.

The incubation period in fry rhodostomusa – 24 hours. Males begin to swim already on the sixth day.

Compared with other types of hemigrammus, they are very large. Now you should take out the plants, the grid and give food.

To feed, the fry are usually unpretentious: they eat cyclope dust, rotifers. The aquarium fish rhodostomus is growing very quickly.
Already at one month old, the fry are stained: the head becomes red, black and white stripes on the tail appear. After 4 months, they can already be determined by gender, and after 6-8 – to pair.

The spawning period of rhodostomus is the same as that of all haracin ones – 7-10 days. When growing fry, you can gradually increase the hardness of the water.
In general, the aquarium fish rhodostomus is very lively, uncomplicated in its content. But its breeding requires attention, so if you want exactly a beautiful school of fish, then rhodostomus will suit you perfectly!

Red tetra is not easy to adapt to the conditions of the aquarium, its content requires a certain competence. This is a schooling fish that loves a large space for action. Therefore, an aquarium should be purchased with a volume of at least 40-50 liters.

At the bottom of it you need to carefully lay out the gravel soil (river sand is not excluded), which is not amenable to purulent processes. Then you can plant on it (ferns and arrowhead), dry leaves and snags.

Rodostomuses like to be surrounded by algae – in stressful situations they hide there. You should not put the aquarium in a noisy, crowded place.

Look at the rhodostomusas floating to the music in the aquarium.

To ensure comfortable living conditions close to natural, one should combine optimal water conditions, without which a full life and quality care is impossible. The pH level should be 5.8-8, and the water temperature should be 22-26 ° C with hardness from 6 to 15 °. It is better to use an external filter, since rhodostomus is sensitive to nitrates and ammonia.

Aquarium lighting is preferably dull, soft, resembling a shade of dense thickets.

Weekly replace 25% of the water from the aquarium. If the color of the fish has faded, it means that the quality of water has deteriorated (for ammonia and nitrates).

Rhodostomus swims in all layers of water, there is no leader among the schools of fish. They feel great next to their relatives of 5-7 individuals.

They can also be lodged with other members of the Hemmigramus genus.

Rodostomus is fastidious in content, and breeding it is no less serious task. The fact is that in adult parents, caviar can not be fertilized, provided poor-quality water.

Another reason why its breeding is problematic – the fish fry grows very slowly. The sex of the fish is difficult to determine until the beginning of spawning.

A spawning aquarium should be kept in perfect cleanliness with a UV sterilizer in the filter in order to purify water from fungi and harmful bacteria. Males and females that intend to spawn should be grown in sour and soft water.

Before spawning, rhodostomuses feed on live food.

Rhodostomus reaches sexual maturity after 8-12 months of life in good aquarium water. In separate aquariums for males and females (before spawning), the water conditions should be slightly different: the water temperature should be raised by 1-2 degrees, the water hardness should be reduced to 4-6 o, the pH level – to 6.6-6.8.

In addition, before settling in a spawning aquarium, it should be carefully prepared. To do this, you need to take rainwater, water from forest puddles, distilled water, adding to it a decoction of peat.

The resulting water must be very well filtered and poured into the prepared aquarium a few days before landing the parents. At the time of settling, the parameters of water in the spawning pool should be as follows: temperature 25 ° С -27 ° С, water hardness 2 ° – 4 °, pH 6.0 -6.2.

Rhodostomus breeding its stimulates to great attention to every detail.

Inside the aquarium should be placed a grid for spawning, and cover it with glass so that the fish do not jump out. Spawning lasts about ten days, during which males actively look after females until they get tired of their obsession.

Males in spawning should be twice as large as females.

In the evening, the fish spawn, in the morning there is throwing caviar. So that adult individuals do not accidentally eat offspring, they are resettled, and the caviar aquarium itself is obscured.

The incubation period is more than 24 hours, after which the net and plants are removed, reducing the water level. For 1 time the female brings 400 sticky eggs, for 4 days fry appear, which are fed with infusoria and live dust. By the age of 2 months reach the length of adult rhodostomy.

Under favorable conditions, rhodostomus spawns 7-8 times a year.

On the video – rhodostomy with swordtails in the general aquarium

Rhodostomus is unpretentious in food. The adult fish consumes both dry and frozen food: cyclops, daphnia, small moths, insect larvae, artemia, and a shredder.

It is better to give less dry food, and preferably smaller ones, because the red tetra has a small mouth.

When you can overcome the difficulties associated with the breeding and care of this beautiful and harmless fish, the result will not wait long. All efforts will not go in vain if the work approached with love and responsibility.

Lovely radostomusy will delight the eye of his master and his guests.

See also: The smallest aquarium fish.

Rodostomus – red tetra: content, compatibility, breeding, photo.

Rodostomusi prefer to live in a company of at least 6-8 individuals. In this case, an aquarium for such a number of fish should be a volume of not less than 50 liters. It is advisable to thickly plant it underwater plants.

Rhodostomus, the content of which in an aquarium will not be difficult if the water hardness is 6-13 units, the pH is from 5.8 to 7.8 and the water temperature is 23-27 ° C, prefers to be in the lower or middle layer of water.

Mandatory filtering and aeration. Every week you need to replace a third of the water. The appearance of tetra rhodostomus can be determined when the water in the aquarium becomes too polluted with nitrates, nitrites and ammonia.

In this case, the red color on the fish’s head noticeably fades. This means that the water in the aquarium urgently needs to be changed, otherwise its inhabitants may die.

The lighting of the aquarium with rhodostomus should be muffled.

These fish are not choosy in feeding and are happy to eat daphnias, Artemia, and a tubule (both live and frozen), and also eat dry fish food in the form of pellets or flakes.

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