Aquarium eel species. Eel fish in the aquarium

There are a lot of fans to look at fish in aquariums. There are many who decide to get an aquarium on their own. Each aquarist himself chooses the type of fish for his aqua world. There are a great many different fish designed specifically for breeding at home. This article will focus on one of these types. They are called macrognatus or mastacimbelus.

This interesting fish is brought from the Moluccas in India, and from the islands of the Malay Archipelago in Thailand. If you grow macrognathus in an aquarium, then its length will not exceed 20 or 25 centimeters. In nature, its length can reach 40 centimeters.

The appearance of Macrognathus fish is very peculiar. This fish is very similar to eel, but has a very interesting color. The scales of this fish come in different shades - from coffee to dark olive. On the sides and back, dark and light stripes of these shades may differ. The muzzle has a pointed movable ending. The fish itself is very active and will stand out from other fish in the aquarium. The health of the fish can be determined by the color of the fins. They should be light brown. A reddish tint may be observed. On the dorsal fin there are several black oval spots, edged in a golden rim. 20 centimeters is enough for aquarium fish big sizes, however, due to the narrow body, the dimensions of the macrognathus are not too catchy.

Like most fish, females are almost twice as large as males. By the time the female is ready to spawn, eggs will be clearly visible in her stomach. In a month, the size of the fry will grow to 5 centimeters. After some time, battles for territory will begin. They can bite each other and anyone who tries to lay eyes on his territory. That is why they are inhabited with large fish, or left all alone. If you need to transplant a plant, or fix something in the aquarium, be sure to transplant the macrognathus first, and then dip your hand into the water, otherwise you risk being bitten by your pet. Macrognathus do not like bright light, so they are active closer to the night. During the day or with an excess of lighting, these fish try to remain invisible. A variety of objects and accessories located in the aquarium can be a refuge for them: stones located at the bottom, and all kinds of dense thickets, in the roots of which they like to hide, and caves, and various ceramic pipes, as well as snags. The main thing is to provide them with all kinds of places where they could hide before dark.

The mobility of these fish is very high. They may even crawl out of the aquarium. To prevent this from happening, always cover the aquarium with something, especially at night. If macrogranules crawl out of the aquarium during the daytime, then this may be a signal that they are hungry or that they are not satisfied with the conditions of the environment in which they live. Macrogranules are very fond of digging in river sand, which should not be too fine. The presence of aquarium soil for this type of fish is very important condition to ensure their proper maintenance and development. From soils it is impossible to use small not rounded gravel. This type of substrate has very sharp edges, touching which can lead to various injuries on the body of the fish. You also need to pay attention to the fact that the cracks near the tubes and wires of the heater and filter are carefully sealed.

Macro granules can dig through the entire bottom of the aquarium. As a result, they can damage all the plants you plant. To prevent this from happening, choose plants with strong roots and tough leaves that they cannot ruin. You can also plant plants in pots. The bottom soil should not be too dense. It is very important for fish to burrow into the sand, otherwise sores may appear on its body that resemble a bluish-white coating. This plaque can only be cured at an early stage.

In order for the maintenance and development of macrogranules to occur correctly, you need to pay attention to the aeration and filtration of the aquarium in which you keep them. If the water is not clean enough, the fish will start crawling out of it. You need to change and add salt to the water quite often. Especially when you notice that the activity of the fish has increased during the daytime. A couple of grams of salt per 1 liter of water will be quite sufficient.

Mastacimbelus is not very picky about food. He eats almost all types of fish food: small live, as well as frozen food, small fish.

In a year or a year and a half, when the body length of the mastacimbelus reaches 12 centimeters, it will enter the stage of puberty. This type fish can only be bred with hypofreeze injections. The female lays eggs in dense thickets. The fry are growing pretty fast.

All the inhabitants of the aquarium can be divided into good-natured, open creatures and mysterious individuals with a complex character and exotic appearance. The second group includes the aquarium eel, a representative of the proboscis perciformes. It is unusual and mysterious, not like the classic aquarium fish and endowed by nature with a number of specific properties. For those who find mutual language with macrognathus, it will not be boring.

Who is this unusual inhabitant of the aquarium?

Having mastered general rules caring for the inhabitants of home aquariums, you can set yourself the task of taming such a creature as an ocellated macrognathus. To do this, you need to study well the habits and character of the fish, its habits and addictions. It's important to know biological rhythms and life cycle features.

So, mastacembelidae has an elongated body, flattened laterally, and an elongated head with a modified upper lip, similar to a proboscis. This is the organ of smell, with the help of which the fish is oriented in the external environment.

The color is dull, prone to mimicry: brown, chestnut, olive or gray-greenish. A light longitudinal stripe and bright contrast points are clearly distinguished, resembling numerous eyes (hence the corresponding name - “eyed”). The skin is tough and has many spikes that act as a mechanical protection against more large predators. The fins, despite the elongated shape of the body, are shifted to the rear, the dorsal and anal fins practically pass into the tail.

In an aquarium, it can grow up to 25 cm, subject to a large volume of water and full regular nutrition. In nature, similar species are larger - up to 50 cm.

What living conditions do they prefer?

Aquarium eel is selfish and picky. He does not enjoy neighbors who take a lot of free space and having fun on any occasion. This is a serious and calm individual, preferring clean, aerated water, with the following indicators:

hardness - from 6 to 15;
water temperature - from 20 to 25 o;
acidity - 7-8.

Will not be ocellated against lightly salted water (3 tablespoons for every 100 liters of water).

The features of the skin are such that the soil must be selected carefully: fine sand will be good, but with the active activity of the fish it will make the water cloudy. Soil with sharp small pebbles can damage the skin of fish that lead a benthic lifestyle, and in some places can even crawl from place to place.

Therefore, fine gravel, preferably dark in color, is suitable.

Plants are best placed in pots or pick up species firmly rooted in the ground. Having undermining the bottom among their favorite pastimes, mastacembelidae can pull them out, than create a mess and disturb comfort.

Lighting should not be intense, and it is better to shade the walls of the aquarium. The fish does not tolerate bright light and fuss. It is in her nature to explore the secluded corners of underwater castles and caves, to tour among snags and stone structures. Leading a nocturnal lifestyle, during the day the fish lurk in dense thickets, watching what is happening. Goes hunting at night. But this is in nature. Responding to regime moments aquarium life, the ocular can change its usual foundations and transfer the active life phase to the day.

What does this fish eat?

Being a predator, she prefers to build her diet from food of animal origin: small fish, caviar, crabs, plankton. It is clear that minced meat or fish will be appreciated, and chopped shrimp will delight, if you can imagine it in the performance of macrognathus.

The macrognatus fish picks up food from the bottom, but it is possible to accustom it to eating by the hour in the upper layers of the water. He hears the smell of his favorite food, even being in the most distal parts of the aquarium, but because of his slowness, he is not able to quickly start eating it. Therefore, if there are more efficient neighbors, it can often remain hungry. Based on this, food can be purposefully placed in its habitats.

Some aquarists manage to feed these aquatic inhabitants dry food, frozen concentrates, and dry food for certain species. But this does not always happen and can lead to loss of health and mood.

Is it possible to breed in an aquarium?

An eel in an aquarium is unlikely to bring the desired offspring. Theoretically, this is possible, but with the implementation of hormonal stimulation of individuals to spawn. Injection of special preparations will enhance the reproductive reflex, but even then the process will not pass without much effort. An appropriate spawning aquarium, softness of the water, a certain level of light, highly aerated water and powerful filtration - but this may not be enough.

What neighbors can you live with?

In the company of eel macrognathus can take
large calm fish with a peaceful character. Suitable options are: synodontis, mastzembels, mistuses, large catfish. It is not contraindicated to stay together with the inhabitants of the middle layers of the water in the aquarium, for example, calm angelfish and large goldfish. The main thing is that the interests of the inhabitants do not intersect and the aquarium has an appropriate design.

Today macrognathus is not the most popular fish. It can only be purchased at reputable pet stores, sometimes on order. But for those who feel that they are ready to make friends with him and fall in love with him, it is worth a try. After all, everything that is insufficiently known and studied is always of interest.

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AT natural environment Macrognathus lives in Burma, India, Thailand, where it lives in fresh and brackish waters. This is a rather long fish, resembling an eel with a mobile and graceful muzzle. The body length of Macrognathus is up to 40 centimeters in vivo, and in aquarium - 20-25. A beautiful fish is very fond of aquarists. It is interesting to observe how this water worm burrows, like an ostrich, into the ground and its muzzle sticks out from there. So, what is needed to create Macrognathus good conditions life in an aquarium? How should it be fed and bred?

The graceful Macrognathus has a fox-like face. This fish is generally different from traditional aquarium fish. Her body, like the body of an eel, is strongly elongated in length. Its color is coffee-beige with original stains of light and shiny stripes. The belly of the fish is light. A light stripe runs along the body of Macrognathus. Yellow dots and strokes are randomly scattered on his head and body. The fins of the fish are colored red. But the dorsal fin is decorated with black peacock eyes, edged with gold. A feature of the appearance of females is the visual visibility of eggs through the skin. Adult females are always larger than males.

Macrognathus should be kept in a large aquarium, based on the size of its body. There must be a lot of hiding places. Desirable and aquarium plants. The soil can be river sand. Very often, Macrognathuses are completely buried in the ground, and only the muzzle of the fish sticks out on its surface, or rather its nose. For this reason, the ground should not contain sharp stones that would hurt the fish. If Macrognathus do not have the opportunity to burrow into the ground, then they can simply get sick. They are prone to making a large number mucus, which, when buried in the ground, the fish wipe. When Macrognathus is kept without soil, such a process of natural cleansing of mucus is not possible, and then it causes inflammation of the skin.

Fish must be kept in a closed aquarium because they can get out of it through the wires of the filtration and aeration system. The following water parameters are optimal for keeping Macrognathus in an aquarium: temperature - 22-26 ° C, acidity - up to 7 pH, hardness - 5-10 °. Filtration and aeration of water in the aquarium are required. It is also advisable to add to the water sea salt at the rate of three tablespoons per 100 liters of water. Macrognathuses eat all types of live food, including frozen ones.

Breeding

The fish reaches its sexual maturity by the age of two. You should be aware that Macrognathus spawning rarely occurs without hormonal stimulation. The success of its breeding also depends on the preparedness of the producers and the level of cleanliness in the spawning grounds.

The spawning aquarium should have a capacity of approximately 250 liters, its length is preferably at least a meter.

After thorough washing, the spawning ground is filled with water. Its acidity and hardness are of no particular importance in the spawning process. But in practice, the best results are when spawning in water with medium hardness. In the spawning aquarium, the water temperature should be maintained at 26-28°C. Shelters for producers (1 female and 2 males) can serve as fragments of flower pots, drainage tubes, driftwood. As a substrate, you can take a bush of bolbitis or microzorium.

Preparation of producers consists in keeping them under optimal water parameters and careful feeding. A sign of readiness for spawning is the swelling of the female's abdomen. Before planting fish for spawning, they are usually given an injection of choriogonin or gonadotropin.

During the spawning period, the aquarium is shaded and the producers are not disturbed. The female of Macrognathus usually starts spawning in pairs, and then another male joins her. With a decrease in activity, the fish begin to hide in shelters, they move less. This is a signal to remove them from the spawning grounds. After 24 hours, larvae hatch from the eggs. Young fish are fed with plankton. As the fry grow, they are sorted and seated in nursery ponds. At the bottom of the aquarium it is necessary to lay out the washed sand in a thin layer, and also place Javanese moss, install a cleaning filter.

Ocellated macrognathus (Macrognathus aculeatus) is an aquarium eel, a representative of the Mastacembelidae (proboscis) family. A conditionally peaceful inhabitant of a common aquarium with increased nocturnal activity and unusual behavior. Those who wish to have such an interesting pet are advised to exercise maximum caution in handling it.
An eel, in self-defense, can bite or injure with sharp needles located on its back.

AT wild nature found in the waters of Southeast Asia. Quite large - in the wild it can reach 45 cm, at the same time significantly inferior in size to other species of its family. In the aquarium, its limit is 25 cm.

It is almost impossible to distinguish a female from a macrognathus male before sexual maturity. However, in adults, the differences are also very weakly expressed. The female is larger and thicker in appearance, sometimes caviar can be seen through the skin.

The life expectancy of the macrognatus eel strongly depends on the quality of the conditions of detention and ranges from 5 to 12 years.

Terms

When choosing an aquarium for an ocellate
macrognathus should take into account the large size of the eel. For an adult, a volume of 80 to 150 liters is required. For a pair of fish or a common aquarium, the minimum volume of the tank is from 200 liters, with the largest possible bottom area. This representative of acne is distinguished by some territoriality, which manifests itself with age. Therefore, dense planting of fish is desirable to avoid.

A powerful filter, compressor and cover should be included with the aquarium. Macrognath in the daytime is a nervous fish and can slip out into any gap. In the open air it is able to live for about an hour, but this is not recommended.

Macrognatus fish do not show special frills in the requirements for water parameters: temperature - 21-28 ° С; acidity in the range of 7 pH, with deviations in one direction or another by 0.5; hardness - up to 15 ° dH, it is better not to exceed 10 ° dH. The main rule is that the water must be clean, for this reason, 1/3 volume changes weekly are required. From time to time it is advisable to add a little salt to the water.

important factors for comfortable life macrognathus ocellarus are:

The presence of soil in the aquarium - pebbles or gravel of the smallest fraction. Coarse sand can also be suitable, but in this case there will be a “dust curtain” in the aquarium quite often, since the macrognate eel is a big fan of plowing the bottom.
The presence of aquarium plants and various kinds of shelters in which the fish can hide during daylight hours. Decorations in the form of snags, heaps of large stones are also welcome, but they must be well fixed so as not to fall on the head of an actively swarming fish. And the plant is recommended to be planted in pots, otherwise from time to time they will float to the surface.

Soil and large stones are necessary in order for the fish to use them to remove the mucus protruding from the body. Deprived of this opportunity, macrognaths begin to suffer from skin irritations, which subsequently affect their well-being and life expectancy.

Lighting is preferably moderate, muffled. Bright light will unnerve an already not very courageous eel.

Feeding

Eel macrognathus ocelli is a predator by nature. Accordingly, it should be fed live or frozen food. Well accepts tubifex, earthworms, bloodworms, coretra. He enjoys eating squid and cod meat. Small fish, live or frozen.

Industrial feed eats much worse, it is allowed to give them only in the form of top dressing.

Compatibility with other fish

Macrognathus, although it is a predator, on big fish will never fizzle. He will get along well with proportionate species, provided that they also do not show excessive aggression. As neighbors, mastocembels, flag synodontis, mistuses and other large species of peaceful bottom fish can suit him.

reproduction

Otherwise, their breeding is fairly standard. Showing increased activity producers are abundantly fed and kept in the most comfortable conditions.

A 200 or 250 liter aquarium is being prepared as a spawning ground. The water temperature in it is one to two degrees higher than usual, the hardness should be less than 10 ° dH. Needs a filter and good flow. A separator mesh or any other spawning substrate must be laid on the bottom. Also, a small number of plants are placed in the spawning ground, and the tank itself is shaded.

A pair is taken for spawning, it is also allowed to use two males and one female. The injection is made immediately before planting. As soon as the activity of producers decreases to the usual level, and they express a desire to hide, spawning is completed. After that, the fish should be returned to the general aquarium.

Incubation of eggs lasts approximately three days. The same amount is required for the larvae to move into the stage of fry. At first, the juveniles are fed with plankton, as they grow, they switch to the nematode, Artemia nauplii, rotifers, and then to larger live foods.

Individuals that have reached one or two years of age are considered adults and capable of reproduction.

Video: Macrognathus ocular

Aquarium fish are popular among pets. Silent and do not take up much space, do not require specific care and a lot of time. Having caught fire with the idea of acquiring a couple of ornamental fish, you need to find out in detail about the features of each species and the requirements for maintenance, and when buying, navigate the names of the fish.

The title of favorites deserve unpretentious or interesting inhabitants. The most popular aquarium fish get along well with their neighbors and are adapted to different conditions content. Studying the catalog with a list of fish, a novice aquarist can be confused due to the huge number of varieties. Therefore, we have compiled the names of all common aquarium fish in an alphabetical list for easy perception.

A distinctive feature of these loaches is an elongated body, reaching 12 cm in length in adults. Unpretentious and non-conflict, they do not require a large space. Activity period aquarium fish occurs at night, rarely seen during the day. The behavior is characterized by digging among the soil in search of food, which plays a role in cleaning the aquarium.

Akara

Won sympathy among lovers of aquatic pets due to grace and conspicuous appearance. reach 25 cm in length, grow rapidly. Fish of this species are difficult to care for and need a large aquarium, designed for 300-500 liters. You will need deep water filtration. It is highly not recommended to add fish of other species. It is worth avoiding sharp decorations and providing them with shelters.

Small specimens of aquarium fish of the carp family amaze with a variety of species. They are omnivorous, love subdued light and easily adapt to different conditions.

The presented species of loaches will look very impressive in a spacious aquarium due to the yellow-orange color with dark stripes. In nature, bots live in flocks, therefore, for a comfortable existence, three fish are placed in one vessel. Difficult to content.

Which delight their owners with a stunning appearance. unpretentious in food and easy care. Many breeds are distinguished by a pretty veiled tail. Body dimensions are small: 1.5–4 cm in length.

A variety of labyrinth fish. They differ in appearance and color. adapt to different conditions. An important detail for normal life is access to air.

Graceful and small fish from the carp family. The sizes of these mobile fish for an aquarium reach 6 cm. They are social animals, therefore they are kept in flocks of 5-6 individuals.

Extremely capricious, causing maintenance problems even for experienced aquarists. They have a charming coloration and a flat body shape. They require high temperatures and frequent water purification. love to be in the company of their own kind.

There are more than 120 different breeds. They prefer oxygenated water and a spacious aquarium. Over time, they grow up to 16 cm, while several individuals should be launched. If the conditions of detention are met, then there will be no trouble with them.

Highly large inhabitants aquatic environment designed to be kept in ponds or large containers. Unpretentious, it is only important to monitor the purity of the water. Long-lived carps are omnivorous, have an interesting color with fiery orange and dark spots.

Small and non-confrontational catfish get along well with most peaceful aquarium fish. Unpretentious and omnivorous. they clean the ground by swimming along the bottom in search of food. They love to be in the shade. Beginners can safely consider these beauties as inhabitants of the aquarium.

Small labyrinth fish with an expressive iridescent color. slightly shy, get along with other peaceful species of aquarium fish. A perfect example of a combination of extraordinary appearance and unpretentiousness.

Also called the paradise fish, the domestic fish is endowed with scales. blue color and large iridescent tail and fin. Undemanding.

It got its name because of the outgrowth on the tail, resembling a sword. This is a small viviparous individual, which is characterized by interesting color combinations in color, unpretentiousness and high level survival.

A small representative of the carp family with an incredibly bright color. The average length of an adult is 2 cm. It prefers to stay in flocks, it is unpretentious.

A small indoor viviparous fish, reaching 10 cm in length. Breeding and keeping does not require much experience. The main variety of colors is silver and gold, as well as dark and green. Silver color with black dots distinguishing feature Mollies of the Dalmatian breed. For beginner aquarists, the short-finned variety is more suitable.

Neon

Tiny natives of the haracin family. reach 2-3 cm in length, have a memorable color with a bright blue stripe. Due to its color range, low maintenance requirements and the ability to get along with other small fish without any problems.

Popular with aquarists due to its resemblance to the great white shark. Because of this, it is called. In nature, it grows up to 130 cm, in captivity it is smaller. For free movement, the fish needs a spacious tank equipped with powerful filters. Pangasius has a delicate skin, so it is vulnerable to injury.

Cockerel

Has a tail resembling a long flowing dress. Catchy external features are present in most selective species; natural views that don't look as impressive. there are a variety of colors. Of the minuses, one can note the conflict of some individuals. Artificially bred breeds are more prone to disease and infection.

A very popular type of live-bearing fish. There is a wide variety of color options. In nature, yellow-colored species with black patches are often found. unpretentious and peaceful.

Peaceful catfish with spotted color. Often, over the course of life, the color on the body changes. Pterygoplchites are rather large and unhurried. In nature, they grow up to 50 centimeters, in captivity they are smaller. Care is simple, requiring only a spacious aquarium and a plant-based diet.

iris

Bold colors and original forms of fins and torso are characteristic for them. The dorsal fin of these cute fish with a gap dividing it into two parts. Like many small fish, iris are mobile and non-conflict. Flocking creatures for which sharp fluctuations in water parameters and temperature conditions are undesirable.

These Indochinese aquatic life They eat algae and keep the aquarium clean. On a small yellowish abdomen there is a dark stripe, fins and tail are transparent. In spite of speaking name, representatives of the carp family are omnivores.

Some types of catfish grow up to 30 cm. Owners of an abdomen with a contrasting spotted or striped pattern prefer a fixed lifestyle, a 200-liter vessel is enough for one fish. Peaceful, get along with other species. live mainly at the bottom, so you need to feed sinking food.

scalar

Popular cichlids with majestic appearance. They have a flat body shape and large fins. The most common breeds are artificially bred, this has affected the variety of colors and scale patterns. vulnerable to disease. Require pure water with little flow. They may show aggression.

Telescope

A goldfish named by the telescope for its bulging eyes. The protruding eyes are fully formed in adults after 6 months. Due to the specific structure of the eyelids, aquarium decorations with sharp elements should be avoided. Like other goldfish, it does not need complex care.

Small representatives of the characin family. The body reaches 5 cm in length and is usually silver in color. The color is notable for a pair of dark vertical stripes. There are artificially bred species with a bright color color. From the requirements for care, one can single out the need to change the water in a timely manner and keep the habitat clean. Schooling fish.

Small and beautiful fish, suitable for keeping in a small aquarium. Like neons, they easily get along with non-conflict fish of a different species. They love to be in company. The color of the y depends on the species, it happens in a variety of shades from silver to fiery red. There are also transparent and translucent individuals.

cichlomas

The size of the fish depends on the species. Individuals 10–12 cm in size are popular, for example, Tsikhlazoma Meeki or. They prefer to stay in flocks or in pairs, during the spawning period they become more aggressive. Colors are different, including striped and spotted.

cichlids

Combination of several thousand species. Often aggressive, while - caring parents. Popular fish family with specimens different forms, colors and sizes. Unpretentious and easily adapt to any conditions.

black knife

A solitary predator from the Apteronotidae family. AT natural environment reaches 50 cm, in an aquarium - up to 40 cm. The shape of the body resembles a knife, the color of the fish is completely black. It has a special electric organ that helps fish in hunting. The diet of the animal consists of aquatic insects and fry. Requires good filtration and a spacious aquarium. It is not worth keeping together with your species, relatives are aggressive towards each other, but with others large species the knife fish is behaving calmly.

There is a noticeable visual resemblance of the Black Pacu or Tambaki to the bloodthirsty piranha. Fish from 70 cm in size need a wide aquarium with powerful filtration. The need to buy a spacious vessel. Pacu are omnivorous and shy, you should keep the fish away from loud and harsh sounds.

Other popular fish

Each breed is unique and may not fit general characteristics the family to which she belongs. Each aquarist has to choose for himself which fish are suitable for him and under the conditions that he can create for them.

Fans of predators admire the well-known. And also Aristochromis christi - a large carnivorous fish, painted in blue and gray tones, won a place. There are such types of fish as Crescent-tailed barracuda, Tiger perch, Golden leopard, Carapace, Exodon.

Of the non-standard aquarium dwellings, the Toad Fish and the Leaf Fish stand out, which received their names for their appearance, the fisherman catfish with a specific body shape, the Bornean tetradon - the owner of red eyes. Fish with a transparent body look unique, for example, Glass Angel and.

Exodon

There is also a group of Killy fish that are united by their habitat. The list of fish includes about 1270 items. In nature, Killies live in small bodies of water, this is reflected in appearance fish and gave them a resemblance. Names of some species: Azraq Toothfish, Notobranchius Rahova, Panhax, Myers' Fish, Florida, and Japanese Orizia.

Of the calm and peaceful species of aquarium fish, one can distinguish the Spiny Catfish, the Bolivian Butterfly, the Orangehead Geophagus and the Imperial Gudgeon.

The decision to purchase fish should be approached responsibly, because these are at least small, but living creatures. From the list of fish above, the aquarist can decide on the species, and then get acquainted in detail with detailed description aquarium fish.

Universal tips for caring for aquatic pets:

The capacity of the aquarium is calculated based on the size of the fish: for every 5 cm of the body, 2 liters of water are required.
In the complete absence or lack of experience in keeping aquarium fish, it is categorically not recommended to purchase expensive exotic species.
A vessel with fish that do not require access to oxygen is covered with a lid, otherwise aquarium animals may jump out.
Remains of uneaten food should be removed from the water tank in time.
You can not overfeed the fish, in order to avoid health problems. Feed should be poured in the amount that the fish can handle in 5 minutes.
Do not allow sudden changes in temperature and changes in the acid-base balance.
Keep the aquarium away from noise and vibrations.

Share in the comments which fish you like best!