Fishes

Silver fish

Pin
Send
Share
Send
Send


Metinis (Metinnis) - silver fish

The fashion for money-raising funds in a house was always and at all times. Someone fumigates the premises with special aromas, someone grows money plants, and someone wears a penny under the heel. Now this trend has spread to the aquarium, because what could be better than to have a living silver dollar at home? This is the name of the Metinnis fish.

A bit of history

In nature, this species of fish is found in South America in the basins of the Amazon and Paraguay. Unlike their predatory piranha counterparts, vegetarians prefer places with dense vegetation for life, but they do not refuse protein foods.

For the first time, silver metinnis are mentioned in 1923, and were brought to Russia only in 1970. They are obliged to associate with the American currency to the shape of their flat body, whose round outlines resemble a dollar, and the steel luster of scales is similar to its silver shimmer.

Appearance

Silver metinnis (Metynnis argenteus) in common is called a fish-dollar, a mirror fish. If there is a desire to organize an aquarium with a large and beautiful fish, then Metinnis is suitable for this purpose almost perfectly.

Despite its large size (it is a relative of piranha), Metinnis is peaceful and undemanding in content. In addition, he is also a vegetarian.

The silver flare of the scales against the background of green vegetation looks very expressive and will please not only the household, but also the cat. Metinis will also be an excellent acquisition for an aquarium in an office or sales area, reminding employees of the precious luster of coins, encouraging them to work even harder and better.

The eyes of the fish are also silver with a vertical pupil-like black pupil. The dorsal fin is transparent, high, crescent-shaped, with caudal tail. Anal has a sharp base. The teeth are, but small.

Depending on the lighting, the scales may have a green, light blue or brownish tint. Sometimes dark spots or thin transverse stripes may appear on the sides. Some aquarists, when they see them for the first time, get scared, wondering if this is an anomaly. Absolutely not. This is a common natural feature of metinnis, which appears depending on the place of origin of the animal.

Anal fin will help to distinguish male and female. In males, it is sharp, reddish. During the spawning period, the body of the future father becomes red and golden.


Compatibility with other fish

Metinnis in nature live in packs, like any kind of piranha, so in the aquarium it is best not to leave them alone.

Most comfortably pets will feel in a small flock of 6-8 individuals. Yes, and the owner will be more pleasant to admire a whole flock of coins, and not a lonely floating dollar.

But to keep a large number of individuals in one aquarium is best for an aquarist who already has experience in breeding fish. A beginner should start with a couple of animals.

Peaceful nature allows the Metinis to get along with other species of fish, commensurate with them in size, and with catfish.

It is not necessary to keep them with small, fodder fish, such as guppies or neons, which, as has been noted, disappeared under mysterious circumstances a few days later. Sometimes, like neons, crayfish, frogs and shrimps disappeared.

Conditions of detention

In nature, metinnis can reach 15 cm. At home, however, they grow to 12-13 cm. Based on these dimensions, you need to select an aquarium in the calculation of 80-100 liters per individual.

The fish is active, therefore, like its wild brother, loves to frolic and jump. In order for the fish to not accidentally jump under the bed, the aquarium should be kept closed.

To emphasize the beautiful silver glitter of the fish, it is better to use dark soil or just put the aquarium on a dark background. At the bottom you can put decorations: stumps, snags, stones, etc.

Water temperature should be 23-27 ° C, gH 4-18, pH 5.5-7.5. There are no preferences for the chemical composition, but the purity of aqua is the main condition.

Filtration and aeration should be powerful, and a small current, which is always in the Amazon, can be created using filter head. Replacing 1/5 of the water is done weekly.

Complexity of the content

Among all the advantages of keeping and breeding this fish there is one very significant drawback that stops many aquarists. Namely, the fact that Metinnis mows down all the plants in the aquarium.

Silver dollar and flora are almost incompatible things. Therefore, in order not to let the fish feed several thousand rubles in the form of a plant, it is best to decorate the aquarium with artificial representatives of the flora. In extreme cases, suitable leaf or floating plants.

Argued that the interest of fish underwater garden depends on the amount of food. This is partly the case. Therefore, let everyone choose their own, to risk or not expensive plants for the sake of the experiment on compatibility.

Feeding

The diet of metinnis should not cause difficulties for the owner. Fish enjoy eating foods of plant origin, for example, lettuce, cabbage, spinach, Brussels sprouts, cucumber, zucchini, nettle, duckweed. All this before serving must be scalded with boiling water.

You can give dry food containing spirulina. For a variety of suitable and live food, but the proportion of plant foods should be 80% of the pet's diet.

Breeding

At the age of the year, fish are ready for breeding. For spawning, you need to organize a special aquarium with a volume of 200 liters, which is filled with soft and slightly acidic water (hardness up to 4 °, pH 6.4-7.0). The temperature is raised to 28-29 ° C.

To increase the chances of reproduction, it is best to grow the producers themselves from the cradle. In the spawning aquarium around the perimeter impose hard-leaved plants with small leaves. Two weeks before spawning, parents are seated in different aquariums and actively fed with plant food, and then transferred to spawning. At first, the lighting in it should be weak, and then gradually increasing.

At one time, the female can lay 2000 eggs, which slowly sink to the bottom. After spawning, parents do not show interest in caviar, so they can be safely returned back to the general aquarium.

After 3-4 days the larvae appear, and after a week they turn into fry. Artemia, zooplankton and finely chopped fresh lettuce leaves are given to the young. Feeding is carried out several times a day. With proper nutrition, by the age of six months the fry grow into adult fish.

The lifetime of a silver dollar in an aquarium is about 10 years.

Metinnis silver will be an excellent option for those who decide to start an aquarium with large and unpretentious fish, for those who are honing their skills in aquarium art, as well as for those who have succumbed to the universal trend of attracting wealth to the house. After all, what can attract money better than the money itself, and even live?

Money fish in the home aquarium

Did you know that piranha vegetarians live in our world? It turns out that the most bloodthirsty fish can be safe for humans and even bring him good luck!

Metinis ordinary (silver, Schreimüller, dollar fish, Latin. Metynnis argentus) is a herbivorous fish of the Kharatsin family. It lives in the waters of the Amazon. Unlike piranha (close relative), it is a peaceful and slightly fearful being. It prefers secluded thickets, feeds on algae, although it does not refuse protein food. They have small teeth.

Metinis fish are schooling inhabitants of reservoirs, but they perfectly adapt to the conditions of the aquarium. In the wild, their length reaches 15 centimeters, in captivity, they are slightly less. Do not offend neighbors in the aquarium and are not afraid of larger fish. Due to the perfectly rounded body resembling a silver coin, they were called “fish-thaler”, “fish-mirror”. Absolutely unpretentious in the content, so will please the eye of households, office workers, visitors to the trading rooms.

Appearance and content

The body of the fish is rhomboid, pressed from the sides. The dorsal fin has a crescent shape, the caudal fin is weakly expressed. Metinises have transparent fins, the males have a tail fin with a black outline, and an anal veil fin. In females, anal fin is straight and red. Scales very small, tight to each other, flickering in the light of a bluish-greenish tinge. During the spawning period, the body of the male acquires a reddish-golden color. The eyes of the fish are also silvery, with a black pupil.

It is best to buy several metinises at once, as they are schooling fish who do not like loneliness. They are very active and can live in captivity for more than ten years.

Comfortable content - 2-8 fish in one aquarium. However, be careful with the living creatures that these fish can feed on (the Metinis can stalk small fish and crustaceans). Do not move them together with guppies, neons, frogs, crayfish and shrimps.

Whether the breed of metinis is whimsical in content, is it difficult to contain them? It’s easy if you are an experienced aquarist. If a beginner - start with 2-4 fish. 1 individual requires from 80 to 100 liters of aquarium water. Since these fish are very active, it is advisable to keep the aquarium closed (especially at night) so that they do not accidentally jump out.

Filtration and aeration of the aquarium should be high power, it is desirable to create a small flow using the filter head. 20% (1/5 part) of water should be changed weekly. Metinis feel great at a water temperature of 23-27 ° C, p-h 5-7. Aquarium for fish is decorated with dark soil, stones, snags, synthetic plants or greens with harsh leaves. Avoid plants that are rich in calcium and magnesium. Many metinis plants are eaten, so you need to be careful with them.

Look - silver metiniss look good in a large aquarium.

Nutrition and reproduction

About 70-80% of food of metinis is of plant origin (spinach leaves, lettuce leaves, Brussels sprouts, dried nettle, scalded oatmeal, dandelions, zucchini, etc.). The remaining 20% ​​of the diet - a special feed (containing spirulina) for fish or live food. Before feeding the food (plants) need to pour boiling water.

Reaching the year, the Metinis are ready for reproduction. For spawning, a separate aquarium of 200 liters with soft and slightly acidic water (hardness 4o, rH 6.4-7) is suitable. The temperature is raised to 28-29 ° C.

It is recommended to prepare parents before spawning. They are seated in different aquariums with small-leaved plant food (two weeks before the start of spawning). After transfer to the spawning aquarium, its lighting is gradually increased.

The female throws 300-1000 transparent, non-sticky, yellowish-colored eggs that fall to the bottom of the aquarium or settle on plants. After four days, the larvae appear, which begin to feed in 4-8 days with small plankton, crushed lettuce leaves, and artificial food. They feed young animals several times a day. By 6 months, they become adult fish.

See how these peaceful piranhas deal with shrimp.

After throwing eggs, adult metinis show no interest in caviar, so they can be placed in a common aquarium. And not just because they were called "fish dollar". They will bring joy and prosperity to their owner, while absolutely unpretentious and friendly. This is a real treasure that is available to everyone.

See also: Aquarium piranha - what to feed and with whom to settle?

Silver dollar - hello money, forgive plants!

Silver metinnis (lat. Metynnis argenteus) or silver dollar, is an aquarium fish, the appearance of which is spoken by the name itself, it looks like a silver dollar with its body shape and color. And the very Latin name Metynnis means plow, and argenteus - covered with silver.

Peaceful silver metinnis, this is a good choice for those aquarists who want a common aquarium with large fish. But, despite the fact that it is peaceful, metinnis is quite large and needs a large aquarium. They are quite active, and their behavior in the flock is particularly interesting, so if possible take more fish.

For the content you need a spacious aquarium, with soft water, dark soil, plenty of shelters.

Habitat in nature

Metinnis silver (Metynnis argenteus) was first described in 1923. Fish lives in South America, but information about the range varies. There is a silver dollar in Gayane, Amazon, Rio Negro and Paraguay. Since there are many similar species in the genus, it is difficult to say for sure that it is likely that its mention in the area of ​​the Tadgjos River is still wrong, and there is a different species.

Flocking Metinnis, as a rule, live in densely overgrown tributaries of plants, where they feed mainly on plant food. In nature, they prefer plant food, but they are happy to eat protein foods, if that is available.

Description

Almost round body, compressed from the sides. Metinnis can grow up to 15 cm in length, and live 10 years or more.

Metinnis is completely silver, sometimes blue or greenish, depending on the light. There is also a little red, especially on the anal fin in males, which are edged with red. In some conditions, metinnis appear small dark dots on the sides.

Difficulty in content

Silver dollar, it is quite strong and unpretentious fish. Although large, you need a spacious aquarium for maintenance. It is better for the aquarist to have experience in keeping other fish, since for a flock of 4 metinnis, you need an aquarium of 300 liters or more. And do not forget that the plants for them - food.

Feeding

It is interesting that, although Metinnis is a relative of piranha, but unlike it, it feeds mainly on plant food. Among his favorite foods are flakes with spirulina, lettuce, spinach, cucumbers, and zucchini. If you give them vegetables, do not forget to remove the remnants, as they greatly muddy water.

Although the silver dollar prefers a vegetable diet, it is also a protein feed. Especially love bloodworms, koretra, artemia. In a general aquarium, metinnis can be quite timid, so make sure they eat enough.

Content in an aquarium

A large fish that lives in all layers of water, and needs open space for swimming. For a pack of 4 pieces, you need an aquarium of 300 liters or more. Juveniles can be kept in a smaller volume, but they grow very quickly and outgrow this volume.

Metinnis unpretentious and resist disease well, can live in very different conditions. For them it is important that the water is clean, so that a powerful external filter and regular water changes are mandatory. They also love moderate flow, and you can create it with the help of pressure from a filter. Large individuals may rush around when frightened, and even break the heater, so it’s better not to use glass. In addition, they jump well, and the aquarium should be covered.

Remember - Metinnis will eat all the plants in your tank, so it’s best to plant hard species like Anubias or use plastic plants.
Temperature for content: 23-28 ° C, ph: 5.5-7.5, 4 - 18 dGH.

Compatible with other fish

It gets along well with large fish of equal size and more. Small fish with a silver dollar is better not to keep, as he will eat it. Best of all look in a pack of 4 individuals. Neighbors for metinnis can be: shark ball, gigantic gourami, bag-tailed catfish, Plateidoras.

Gender differences

The male anal fin is longer, with a red edging along the edge.

Breeding

Like the angelfish, for breeding metinnis it is better to buy about a dozen fish, to grow them so that they form pairs. Although parents do not eat caviar, other fish will be, so it is better to plant them in a separate aquarium. To stimulate spawning, raise the water temperature to 28 ° C and soften to 8 dgH or below. Be sure to shade the aquarium, and on the surface let floating plants (they need a lot, because they quickly eat)

During spawning, the female lays up to 2000 eggs. They fall to the bottom of the aquarium, where a larva develops within three days. A week later, the fry will swim and start eating. The first food for fry is dust of spirulina, nautilia of artemia.

Metinnis Silver

Silver Metinnis is a herbivorous piranha, and is also called a fish-dollar. The choice of this representative of the marine fauna for a home aquarium will become practical and original at the same time, since the exotic fish will become a wonderful, unpretentious and peaceful loving neighbor to the inhabitants already existing in the water dwelling.

Description

Metinnis belongs to the family Charcidae, the subfamily Sеrrasalminae. Externally, the fish is very similar to the coin. It is due to the shape and silver color that it is called “fish dollar” or “thaler”.

The body shape of this aquarium inhabitant is similar to piranha, only smaller. The fish looks like a rhombus: it has a tall, rounded body that is slightly compressed from the sides. The fin on the back resembles a sickle; the tail has a long base and is slightly cut. The fish has a very brilliant scales, for which he received the recognition of aquarists. Males and females differ with the help of the anal fin: in males it is veiled, and in females it is reddish.

Breeding

Серебристый метиннис в период нереста становится крайне чувствительным к индивидуальному пространству, потому в этот период необходимо обзавестись аквариумом побольше (примерно на 350-500 литров). Нерестовик требуется заполнить свежей водой и различными растениями с мелкими листочками. Непосредственно перед нерестом рыбок нужно откармливать растительной пищей. Самочка мечет икру на поверхность листьев растений на протяжении 3-7 часов; за один раз откладывается от 350 до 1000 икринок. По прошествии примерно 4 суток проклевываются первые мальки, а уже на 4-8 день они начнут активно двигаться и питаться.

By mature age, fish usually reach a length of 14 cm. Metinnis leads a lifestyle of schooling, and therefore feels great in one aquarium with 6-8 relatives.

Conditions of detention

Metinnis - nimble fish. Because of this, she often jumps out of the water, so it is recommended to cover the aquarium with glass. The Silver Dollar requires a large and elongated aquarium of not less than 200 liters.

To make pets feel comfortable, intensive filtration and frequent water changes are necessary. As a decorative component, various snags will fit perfectly: their metinnis will be used as shelters. Since the "fish-dollar" refers to vegetarians, aquarium plants are recommended to be replaced by artificial ones. These wonderful creations are fed with leaflets of lettuce, as well as Brussels sprouts. In the summer you can use dandelions, which at this time very much.

Silver Metinnis is a wonderful choice as an aquarium fish that does not take much trouble and will please the eyes of others.

Arovana silver - fish on Feng Shui ...

Arovana silver (Latin Osteoglossum bicirrhosum) was first introduced to aquarists in 1912. This fish, along with a butterfly fish, gives us a chance to look into the distant past, the aquarium fish is one of the few fish that look the same as they looked in the Jurassic period. South American Arovana is one of the most interesting and unusual large fish, and is also considered to be a symbol of the Feng Shui flow.

One of the most interesting features of arovan is her mouth. It opens in three parts and resembles a cave, which tells us of a predatory and insatiable character. Although they are still small, they can be kept with other fish, but it is best to keep mature fish separately or with very large fish. They are ideal predators and will eat any small fish.
Needless to say that great jumpers are arovanized and the aquarium should always be tightly covered.

Habitat in nature

The silver dragon fish (Osteoglossum bicirrhosum) was first described by Cuvier in 1829. Its scientific name comes from the Greek word "Osteoglossum" meaning bone tongue and "bicirrhosum" - a pair of antennae. Arovana received its usual name for body color - silver.

Dwells silver Arovan in South America. As a rule, in large rivers and their tributaries - the Amazon, Rupununi, Oyapok. However, they do not like to swim upstream, preferring very quiet backwaters and old ladies. In recent years, they also settled in California and Nevada. This became possible due to careless aquarists who released predatory fish into local water bodies.

In nature, Arovana eats everything it can swallow. Most of its food consists of fish, but it also eats large insects. Plant foods make up a small part of her diet. As already mentioned, when possible, the arowans jump out of the water and grab the birds on the fly or sitting on the branches. In addition, monkeys, turtles, and rodents were found in the stomachs of arovan caught.

Arovana silver is a very important part in the life of local residents. It is very much in demand with them and brings a good income for fishermen. The meat is very low in fat and tasty. It is also often sold to local aquarium fish dealers.

In addition, it is considered one of the most expensive fish. For a rare platinum, Arvan was offered $ 80,000, but the owner refused to sell it, saying that it was priceless.

Description

The silver arovan is a very large fish, reaching 120 cm. It has a long, snake-like body, and for its maintenance an aquarium is at least 4 times longer than it. However, arovanas of such sizes are rarely found in an aquarium, they are usually 60-80 cm. Ordinary silver color, with time becomes opalescent, with bluish, reddish or greenish shades. At the same time she can live up to 20 years, even in conditions of bondage.

The mouth is opened in three parts and it can swallow very large fish. She also has a bone tongue, and the bones inside the mouth are covered with teeth ... In the corners of this mouth there is a pair of sensitive whiskers, which serve to detect prey. With their help, Arovana can detect prey even in complete darkness. But, besides that, she also has very sharp eyesight, she can see prey above the surface of the water, sometimes she jumps out and grabs insects and birds from the lower branches of trees. For such dexterity, they even called her a water monkey.

Jump out of the water:

Difficulty in content

Aquarium fish is definitely not for beginners. Arovana needs a very spacious aquarium, even for a young one, as it grows quickly. 250 liters are enough for young fish, but they will quickly require 800-1000 liters already. Very clean and fresh water is also needed. However, like most fish that inhabit rivers, they are very resistant to changes in pH and hardness. In addition to all, it is an extremely expensive pleasure to feed Arvanov.

Feeding

Omnivorous, in nature mainly feeds on fish and insects. Also eat plants, but this is a small part of the diet are arovan. She is known for her insatiability - birds, snakes, monkeys, turtles, rodents, everything was found in her stomach.

In the aquarium, silver arovana eats all kinds of live food. Crank, tube maker, koretra, small fish, shrimp, mussel meat, heart, and more. Sometimes they eat pills or other artificial food. But to everything else, they prefer the live fish that are swallowed. With a certain persistence, they can be accustomed to feeding raw fish, shrimp or other meat feeds.

Rodent feeding:

And fish:

Content in an aquarium

Mostly spend time at the surface of the water, and the depth of the aquarium for them is not very important. Another thing is the length and width. Arovana is a very long fish and should be able to unfold in an aquarium without problems. For adult fish need a volume of 800-1000 liters. Decorations and plants are indifferent to her, but the aquarium should be covered, as they jump very well.

Arovanians like warm (24–30.0 ° C), slow-flowing water with a ph: 6.5–7.0 and 8–12 dGH. The purity of water is very important, for the content it is important to use a powerful external filter, the flow of which is better to distribute over the bottom surface. Also important are regular changes and siphon of the soil.

Aquarium aquarium is rather shameful, and can often jump out of a sudden turn on the lighting. It is better to use lamps that are lit gradually and do not cause fright in fish.

Compatible with other fish

Definitely no fish for common aquariums. Young can still be kept together with other fish. But mature fish will eat all the fish that they can swallow. In addition, they have strong aggression within the gens, relatives can be killed. It is best to keep arovan alone, except with very large fish - black pacu, plexostomus, brocade pterygoplicht, fractocephalus, giant gouras and an Indian knife.

Gender differences

Males are more graceful and have a longer anal fin.

Breeding

In the conditions of a home aquarium, it is almost impossible to dissolve a silver arvan. Caviar is up to 1.5 cm in diameter and the male incubates it in the mouth. After 50-60 days of incubation, the fry hatch with a huge yolk sac. 3-4 days he lives at the expense of him, after which he begins to swim and eat independently.

Goldfish know everything. Is there a silver fish?

~ Alain @ ~

Silver Swallow Fish
Monodactylus argenteus
Silver moony
The silver swallow fish (Monodactylus argenteus) and the common argus (Scatophagus argus) are combined together, as they are pack species that live together in a large brackish-water aquarium. Although they are usually sold as small fish, potentially ordinary argus (Scatophagus argus) can grow up to 30 cm in length. and the swallow silver fish (Monodactylus argenteus) is up to 25 cm. Both species in nature are found in fresh, brackish or sea water; Be sure to find out where the copies you purchased came from. Swallows live along the coast of Africa and in Indonesia. Argus inhabit the coastal waters of the Indian and Pacific Oceans, and the island of Tahiti is located on the eastern border of their range.
In captivity, these fish must be kept in flocks in an aquarium with brackish water, where there is plenty of free space. They love to swim, so you should not keep them in cramped conditions. For these species, water quality is essential. Make sure your filtration system works efficiently, and you can supplement it with a protein trap. It is very important to maintain a minimum level of nitrates, otherwise argus will suffer greatly. Regular replacement of a part of water is very important, and not just the addition of fresh water to compensate for evaporation.
Argus eat plants, sometimes completely destroying them. You can decorate the aquarium with wood and stones with the addition of several artificial plants to revitalize the interior. Consider the love of Argus to eating plants, choosing a diet for them. Swallow fish do not like plants so much, but for a more balanced diet they also need to include herbal supplements. Both species are omnivores, they can use different food — live and flaky food, lettuce, peas, oatmeal, frozen shrimps, bloodworms, etc. The more varied the diet of these fish, the brighter they are painted.

~ Running on the waves @ m ~

The far ancestor of the goldfish is the common silver carp that lives in swampy lakes and ponds in East Asia.
KARAS SILVER (Carassius auratus) differs from an ordinary crucian in a large number of gill-like stamens, silvery coloring of sides and abdomen, in black brunt color. Silver carp is found in the basins of the Danube, Dnieper, Prut, Volga, in the lower reaches of the Syr Darya and Amudarya rivers, in the floodplain lakes of the Siberian rivers to the Kolyma River inclusive, in the Amur basin, in the rivers of Primorye, in the lakes of Sakhalin, in the waters of China and Korea. Silver carp was introduced to North America, in ponds of Western Europe, Thailand, and India. Recently he has got accustomed to life and has become a commercial fish in Russia, in the lakes of Kamchatka. Within its area of ​​distribution, it forms two subspecies — a typical Chinese goldfish (C. auratus auratus) inhabiting the waters of China and an ordinary goldfish (C. auratus gibelio) living in the Amur basin and to the west in Siberia, in the Aral Sea basin and in Europe. Compared with the gold carp, it is more attached to large lakes, found in large rivers. It usually grows somewhat faster than the common goldfish, reaches 45 cm in length and weighs more than 1 kg. Zoo and phytoplankton are quite important in the diet. Goldfish is bred in ponds where carp cannot live, or they are planted in carp ponds. Female carp reach sexual maturity in 3-4 years. Fecundity of 160-400 thousand eggs. Silver carp has an unusual sex ratio. As a rule, males are less than females (Amur basin). Only in very few reservoirs (some ponds of Belarus) males and females are found in almost equal numbers. Most often there are populations where males are completely absent or only occasionally appear among females. Females from such same-sex populations reproduce with the participation of males of other species of fish that are close in reproduction ecology (gold carp, tench, carp). In the offspring, only females are obtained that are no different from maternal individuals. This is due to a special method of development in which the sperm that has penetrated the egg cell does not fertilize it, but only stimulates the further development of the egg cell; but this is not parthenogenesis, because without insemination, the eggs will not develop and die. This method of reproduction is called gynogenesis, translated into Russian, it means the birth of females. Males of bisexual populations do not show any signs of limited fertility. Obviously, both categories of males differ in their hereditary nature; It is possible that females from bisexual populations differ from females of same-sex populations. At the same time, it is interesting to note that same-sex populations, under the influence of external conditions, can vary and males appear in them in significant numbers. This phenomenon is observed with a decrease in the feeding capacity of water bodies, with occasional fading, i.e. with a significant deterioration in living conditions. In these cases, populations respond by slowing growth, the appearance and increase in the number of males, and the dwarfism of males (some of them mature at the age of one year). Individuals of bisexual populations have better survival, earlier maturation of females, but are stunted. Therefore, same-sex carp populations are cultivated in pond farms. The silver carp is distinguished by its remarkable plasticity, and the well-known goldfish, representing the chromist of the silver carp, turned out to be an excellent object for selection work. Goldfish bred from goldfish in China nearly a thousand years ago.

Goldfish know everything. Is there a silver fish?

Shameless ™ ... ®

The silver swallow fish (Monodactylus argenteus) and the common argus (Scatophagus argus) are combined together, as they are pack species that live together in a large brackish-water aquarium. Although they are usually sold as small fish, potentially ordinary argus (Scatophagus argus) can grow up to 30 cm in length. and the swallow silver fish (Monodactylus argenteus) is up to 25 cm. Both species in nature are found in fresh, brackish or sea water; Be sure to find out where the copies you purchased came from. Swallows live along the coast of Africa and in Indonesia. Argus inhabit the coastal waters of the Indian and Pacific Oceans, and the island of Tahiti is located on the eastern border of their range.
In captivity, these fish must be kept in flocks in an aquarium with brackish water, where there is plenty of free space. They love to swim, so you should not keep them in cramped conditions. For these species, water quality is essential. Make sure your filtration system works efficiently, and you can supplement it with a protein trap. It is very important to maintain a minimum level of nitrates, otherwise argus will suffer greatly. Regular replacement of a part of water is very important, and not just the addition of fresh water to compensate for evaporation.
Argus eat plants, sometimes completely destroying them. You can decorate the aquarium with wood and stones with the addition of several artificial plants to revitalize the interior. Consider the love of Argus to eating plants, choosing a diet for them. Swallow fish do not like plants so much, but for a more balanced diet they also need to include herbal supplements. Both species are omnivores, they can use different food — live and flaky food, lettuce, peas, oatmeal, frozen shrimps, bloodworms, etc. The more varied the diet of these fish, the brighter they are colored.

Pin
Send
Share
Send
Send