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Sea fish for aquarium

maintenance, care, compatibility

Thalassoma lunare. In their youth, these fish are gray and inconspicuous, but as they grow up they turn into beautiful, wondrous creatures, just like ugly ducklings.

They need a large aquarium (at least 450 liters) with ample space for swimming. Predatory fish, all small fish will destroy. Behavior is quite aggressive: they oppress not only those who are smaller, but also those who resemble them externally.

In case of danger can hide among the stones.

Of course, not all the fish for the marine aquarium are listed here, but only the most common ones.

In conclusion, we say that sea fish are quite expensive – this is not a very pleasant fact. And without investing time, energy and knowledge they can be quickly ruined.

Yes, and pick up sea fish for the aquarium – is not easy.

The combination of colors, shape, compatibility, density of planting, requirements for conditions – this is not a complete list of what needs to be provided. Therefore, it is better to choose small, peaceful and as unpretentious individuals as possible. They are cheaper, they have less pollution, less likely to invisible transfer of infections and parasites.


To settle the little sea fish in the home aquarium, you need to know the following rules:

  • Take into account the possibility of compatibility of fish with other species – analyzing the size, diet, the degree of aggressive nature, swimming speed.
  • In a tank of small capacity, it will be more difficult to establish effective filtration, and daily feeding will accelerate the growth of algae. We’ll have to often care for cleanliness in the pond, removing all contamination.
  • Small fish are more unpretentious in maintenance and care, but their settlement must be thought out in advance. Choose small, calm fish body size up to 5 cm in length. For now, give up the voracious and predatory species.

Admire the spacious sea aquarium.

To settle larger fish in a spacious tank, you must:

  • Choose an aquarium of at least 300 liters.
  • Promptly remove waste products and waste.
  • Settle in a spacious aquarium better flock species of fish.
  • Consider such characteristics of fish as: mobility, poisonousness, food habits (omnivores, herbivores, predators), whether corals are destroyed.
  • Do not buy large fish spontaneously – because they are expensive and difficult to care for. Before buying sea fish, you can consult a specialist.
  1. Parrot fish (lat. Chlorurus bleekeri) probably the fish received the name because of the similarity of its mouth with a bird’s beak. There are varieties of colors and forms of this fish. Fish use their powerful jaw to grind sea corals, where they search for invertebrates for food. They play an important role in the ecosystem of the World Ocean – due to the fragmentation of corals, sands are formed near coral reefs. Having bitten off a layer of coral, a parrot fish will crush it with a powerful jaw, grasping invertebrates. Then she spits out the remains of coral crumbs.

Fire Angel Fish (Flame Angel) is a parrot fish congener. Often it can be seen in reef aquariums, where it is replete with its beauty.

The fiery angel is capricious to the parameters of the aquatic environment. It gets along well with other marine fish swimming in corals.

Diet – invertebrates in live and frozen form, feed of plant origin.

Fish surgeon (born Regal Tang) – got its name due to the sharp plate, which stands out at the base of the tail, and is used for protective purposes.

The so-called “scalpel” fish sends to the enemy, and the conflict can be considered settled. Regal tang – a beautiful marine life, eats algae.

Some fish of this family feed on detritus and plankton.

Zebrasoma (eng. Zebrasoma) is a very beautiful sea fish of small size. In nature, it can be found singly, or in a small group.

Body color is bright yellow, the muzzle is narrow, with protruding lips. The nature of the fish is peaceful and curious.

They explore the reef bottom, finding algae in it. Prefer bright light for the growth of cyanobacteria.

One fish requires an aquarium of 200-300 liters.

Clown fish (Amphiprion) – characterized by an incredibly beautiful colors, is a real decoration of the marine aquarium. In nature, hiding in poisonous sea anemone – anemones. Fish are immune to poisonous secretions of anemones.

The fish have a peaceful nature, they breed well. Body size 10-18 cm.

Thanks to the constant movement, increase the flow of water, which brings actinia food.

See what a clown fish looks like.

  • Sapphire Chrysiptera (Chrysiptera Cyanea) is a small fish from the seas, with a bright appearance and large eyes. The color of the scales is sapphire blue, in the spectrum of light the color may vary. The related species of chrysipters conflict with each other, and the sapphire ones do not get along with each other. Content is possible in a wide aquarium where there are enough shelters.
  • The royal gram (Gramma Loreto) is a small and variegated fish with a fastidious temper, but it is easy to keep it in a domestic saltwater aquarium. Gram is different territorial behavior, and it should be settled only with compatible species of fish. It is not recommended to settle several varieties of grams in one tank at a time. Young grams get along better with other fish, so the first few months of life will decorate a homely body of water. Royal grams feed on small zooplankton.

  • The wrasse-fish pajamas, pseudo-cheilin six-hairs (lat. Pseudocheilinus hexataenia) are a fish with an amazing color and wayward behavior. Guban pajamas can be aggressively tuned to the Pseudocheilinus family members. Periodically terrorizes neighbors, harassing them psychologically and physically. If this fish is well adapted to the marine aquarium, then in beauty and mannerism it will not be equal. Diet – frozen food, plant food. It is recommended to settle in a spacious aquarium with shelters and free space for swimming.
  • Marine Aquarium – we launch a competently photo video step-by-step description.


    The first important purchase will of course be the tank itself. Its shape can be different, most often it is a container with a base in the form of a square, a rectangle, less often forms with a convex front (viewing) wall occur.

    Displacement matters – it will take at least 200 liters, preferably 400 and more. Do not be tempted by 50 and 100-liters – sea animals in them get sick and die.

    Most probably the main purchase will be an external canister filter. Experienced aquarists recommend the Eheim 2260 or 2250 and Fluval 403 or 303.

    You will also need special filler materials – it is ceramic chips, coal and sponge.

    Purchase a thermostat, a skimmer (a device for removing foam), as well as a pump or pump filter – this is a device for saturating water with oxygen, and in combination with a filter there is also a waste disposal mechanism. Be sure to arrange the grounding of the aquarium: buy a RCD (residual current device) and call an electrician who will correctly bring it out and connect it.

    The next purchase is a stock of coal and salt, bacterial preparations, acidity tests, a simple hydrometer (a float that shows how dense the water is) and a siphon for cleaning the bottom.

    If funds allow, take another UV lamp with a capacity of 15 watts and a large canister (about 50 liters) to dilute the salt in it. The first month of caring for the aquarium will require significant costs and effort, and then everything will become much easier – daily feeding and about an hour a week for the maintenance of equipment.

    marine aquarium photo

    Select the desired volume

    It goes without saying that the larger the volume of the aquarium, the more expensive its equipment. Although the best volume for the “sea” is considered a capacity of 200 – 250 liters. (it is easiest to maintain a balanced ecosystem), you can start with a smaller displacement aquariums – the best option would be 50 – 80 liters.

    A very small aquarium (for example, 20 liters) can also be made “sea” if desired, but it is rather difficult to maintain constant water parameters in it. In this case, the rectangular shape of the container is preferable to the cubic one, and this is due to the possibility of organizing the proper lighting, as well as the placement of stones.


    Such stones are also called living, since they are genuine fragments of coral reefs from the ocean, and numerous colonies of beneficial bacteria live in their cavities. Some specimens have real thickets of polyps (anemones) on their surface, and inside – small crustaceans, crabs and sea worms.

    From such guests need to get rid of, moreover, to do it on time. We do not want to frighten you, but in saltwater aquariums, without your control, life can flow like in a real ocean – some eat others, others parasitize everything alive.

    Learn how to install live rock, namely, how to get rid of carnivorous sea anemones, poisonous snails, cones and murex, crayfish, predatory shrimps and all kinds of worms.

    Having brought home the purchased stones, they should be treated – washed under running hot water, be sure to wear durable gloves, as these types of unwanted inhabitants leave painful and dangerous burns and bites. Having installed the stones, observe life in it in the dark time – the hungry and active passengers will soon find themselves.

    At the stage of dealing with them, use special medications or remove animals with tweezers.

    A few words about the second favorite element of the decor – it is seashells in the aquarium. Decorating the seabed, they are absolutely not suitable for our purposes, but beginners often want to use them – it’s beautiful!

    The main reason to abandon the shells is the hardness of the water, which invariably grows due to these sources of calcium carbonate (in fact, chalk). Not all aquarium fish will hurt and die, their possible proximity to the sink depends on the species, but they certainly can not reproduce.

    marine aquarium photo

    Filtration and water recovery systems

    The most important and complex point in equipping a marine aquarium, because the water in it must be perfectly clean and contain a minimum amount of nitrates. If in nature the nature itself takes care of this, and the sea currents constantly bring fresh and clean water, then in an aquarium the problem of water purity can be managed only with the help of special equipment.

    Samp is a container made of organic glass, divided by partitions into compartments in which various aquarium equipment is installed.

    The sump is usually equipped in an aquarium cabinet, but has direct communication with the aquarium. It can be purchased (there is now a large selection of sumps with all the necessary equipment on the market) or it can be made by itself, in this case the aquarist has the opportunity for a unique selection of the aquarium equipment that is most suitable for him.

    The basic principle of operation of a sump is a closed loop.

    With the help of a return pump, water flows from the sump to the aquarium, and then, exceeding a certain level, it enters the overflow box and then flows by gravity back to the sump. What should be in the sump? Foam separator (skimmer).

    With the help of this device organic matter, constantly present there, is removed from the water, even before its disintegration begins. Even invisible to the naked eye, the dirt is quickly collected on the bubbles, which creates a skimmer and accumulates in a special compartment, from which it is then easily removed.

    Biological filter. For these purposes, a separate sump compartment is usually filled with filter material.

    marine aquarium photo

    This may be coral chips, as well as special bio-balls or other porous organic material. The larger the surface of the biological filter, the more bacteria are there, and accordingly the quality of biological filtration improves. We must not forget about the required amount of oxygen for the process, as well as the rate of flow of water through the filter.

    Together, these three factors create the biological stability of the entire system. Algae (refujium).

    Algae are capable of very effectively eliminating nitrates from water, and microplankton propagates in the alga, which serves as food for many inhabitants of the marine aquarium. To organize an algae above one of the compartments of the sump with running water, lighting is provided, and the lamp must be sufficiently powerful (70-100 W). Algae (hetamorph) are placed at the bottom of the compartment, which grow well and multiply in conditions of high nitrate content and bright light.

    Their number must be kept under control, since with excessive growth of algae absorb too many trace elements from the water, and this is harmful for corals.

    The flow of water in the alga should be slower than in the entire aquarium. Return pump. It is usually installed in a special compartment of the sump with a variable water level.

    At the same time, the compartment is made sufficiently bulky so that in the event of an emergency power outage or breakdown of the pump to accommodate the entire volume of water that will merge from the aquarium. To reduce the amount of water that is draining when a similar situation arises, holes are made near the end of the return tube, which is lowered into the aquarium at a distance of 1.5 cm.

    When the level falls, air enters the holes and stops draining. We must pay attention to the power of the return pump. The best solution would be a pump that can pump about 10 volumes of an aquarium per hour.

    In this case, decomposition products will be removed from the aquarium in time, and the water will be sufficiently saturated with oxygen. Avtodoliv.

    The system of compensation for water evaporated from an aquarium, which makes life easier for its owner, since daily level tracking is quite tedious.

    The pump (in specialty stores at the moment their large selection is presented) is installed in a separate sump compartment according to the instructions. Additional compartments.

    It is recommended to purchase or manufacture your own samp, providing for the availability of spare compartments. Methods of water purification in the marine aquarium are constantly being improved and, perhaps, to install any innovations will require the presence of additional compartments.

    In addition, a water heater can be installed in the sump, which in this case does not spoil the appearance created by the aquarist of the “sea” landscape.

    FISHING FOR THE SEA AQUARIUM To make your home sea enjoy not only bright beauty, but also a peaceful atmosphere, populate the reservoir with small and non-aggressive views. As new species are added, study the literature to find out which ones easily get along and which ones conflict.

    If you decide on the maintenance of exotic predator fish, you will have to confine yourself to one species in order not to turn your aquarium into a torture chamber.

    But do not be embarrassed, the choice of fish without exaggeration is great. Rate the diversity of marine aquarium dwellers: parrot fish; backspins; hedgehog fish (without neighbors); fish soldiers; angels: centropig, diakantus and about 20 subspecies; moray eels (without neighbors); fox fish; a wide family of butterfly fish; zebrasome and other surgeon fish; pseudochromisms; clown fish; grams; dogs (without neighbors); tangerines; argus; bullies and many others.

    The life expectancy of all is different, but with good care, successful acclimatization and timely treatment, most species live 3-4 or about 10 years, and angelfish are all twenty. Naturally, from the first days you will need to take care of feeding for the fish, given that different species feed in different ways: there are herbivores, carnivores and omnivores, and some, for example, squirrel fish, eat exclusively living food.

    Choose the inhabitants so that it is easier to put together a diet for most or all at once. Do not flatter yourself that you can dig up worms, feed house flies or get along with bread crumbs.

    For sea fish, branded food is not a whim, but a necessity, so be aware of your responsibility to animals and be ready to constantly buy good food of a certain type.

    Organization of the correct flow in the marine aquarium

    Current is a vital factor for marine life. It purifies water, brings food and oxygen, and determines all the natural cycles of marine animals.

    In the marine aquarium, the flow is especially important for “live” stones. Only with intensive water movement, they are able to fully perform the function of a biological filter.

    Under natural habitat conditions, marine animals become accustomed to fairly strong currents, which sometimes give way to calm. Therefore, in the marine aquarium, some pumps can be turned off at night. The minimum volume pumped by the pump for an hour for the “sea” should be 10-15 volumes of the aquarium, although the best figure would be 50 volumes.

    The flow of water should not fall directly on invertebrates.

    It is better to direct it to the stones so that they are washed as intensely as possible. For these purposes, usually use two pumps installed opposite each other.

    In this case, the minimum number of stagnant zones remains in the aquarium, in which the microfloat can die due to the absence of oxygen.

    Before you start such a hobby, it will be correct to read as much literature on this topic as possible, so as to avoid common mistakes at first. Well, the main points of the plan, how to make a marine aquarium yourself, will be provided by our step-by-step guide: assemble the tank, install the main decorative elements, attach the switched off filters, pour the fillers into them, conduct grounding; fill the tank with water from the tap, stand for 24 hours, drain; fill three-quarters of the volume of water from the tap, turn on the filters, heating (25-26 ° C)

    and pump, uphold the system for seven days; turn off the apparatuses, clean the carbon filler filter and lay a new portion, add sea salt to the water (37 grams of salt for 1 l of water); turn on the pump so that the salt mixes and dissolves, then turn off; when the water settles, clean the bottom with a siphon – there will be a muddy sediment, it must be removed; lay the soil and make all your algae and decorations (stones, houses, shells);

    measure the water density with a hydrometer, bring the indicator up to 1’022-1’024 g / l, pouring either fresh water or saline solution, at the same time fill the tank almost to the edges (space from the top edge is 4-5 cm); wait a week for the water to settle, but after about three days turn on the filters, pump, skimmer and heating, add the drug with bacteria or live rocks (reefs); a week passed, the bacteria had time to decompose the dead organics,

    and filters cleaned the water; check the test content of ammonium, nitrite and phosphorus, as well as acid-base balance (the rate of the first not more than 0.5 mg per liter, the second – not less than 8.0); if the indices deviate, it means that the decay has not yet ended, to put it simply, something is rotting in the water – this needs to be found and removed (remove and clean all the stones and scenery);

    when all indicators are normal, you can run the first settlers – fish, 2-3 small individuals; At this stage, you need to check the indicators daily and make water changes until the bacteria colonize the contents of the aquarium and can not completely process the waste of fish; when the process is established, launch new fish, 1-2 per week, carefully checking the indicators with tests, changing the water; everything gradually enters the rut, and in three months you will have a reliable biosystem!

    Aquarium fridge

    The usual temperature for a saltwater aquarium is 25-26 degrees. If its lower limit is easily regulated with the help of a water heater, then in case of strong heat very often there is a problem with cooling the water to the desired parameters.

    An aquarium refrigerator is not a cheap pleasure, but when you consider that in a particularly hot season, all aquarium inhabitants can die due to overheating, installing it is worth it.



    This article will be especially useful for beginning aquarists. At first glance, it seems to many that at home only freshwater fish can be kept, but it should be noted that the maintenance of marine fish in a home aquarium is even possible under certain very important conditions.

    These include the pH of the water in the aquarium (it should be from 8.0 to 8.4), the level of nitrite (below 20 ppm), temperature (from 24 to 27 ° C).

    Who can be placed in a prepared aquarium? Consider some types of beautiful aquarium sea fish, along with their description.

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