May 29

Sarah Robertson

Intro to the Moscow Guppy: What Makes This Little Fish So Special?

Fishkeeping is a popular hobby enjoyed by people of all ages around the world. While there are many different types of fish that can be kept as pets, one of the most popular is the guppy. Guppies are small, colorful fish that are easy to care for, making them ideal for beginners. Guppies come in a wide variety of colors and patterns, but one of the most striking is the Moscow guppy.

The Moscow guppy is a fish that originated in Russia and has since spread throughout East Germany and beyond. This popular Moscow is known as a solid color guppy with a vibrant texture on its head. They have long, beautiful tail fins and a slender body shape. Moscow guppies are available in a wide range of colors, including black, red, blue, and purple being the most popular.

What makes the Moscow guppy so special? Well, for starters, they are very easy to care for and make great first-time fish for beginners. They are also very hardy, meaning they can withstand a wide range of water conditions. Additionally, Moscow guppies are known for being very peaceful fish, getting along well with other tank mates.

A Quick Moscow Guppy Fish Care Guide 

  • Scientific Name: Poecilia Reticulata
  • Common Name: Moscow Guppy
  • Diet: Omnivores
  • Care Level: Easy
  • Compatibility: Peaceful
  • Ph: 6.0 to 8.0
  • Temperature: 75 – 82 degrees Fahrenheit
  • Water hardness: 8-12 dGH
  • Minimum Tank Size: 5 gallons for a group
  • Tankmates: Mollies, Platies, Swordtails, Endler's livebearers, Girardinus species, Heter
  • Breeding: Livebearers
  • Gestation period: 26-31 days
  • Size: 2.5 inches
  • Life expectancy: 2 years

Moscow Guppy Care in Brief

The guppy is a small fish from Russia that has spread throughout East Germany and beyond. This popular Moscow is often known as a black-and-white guppy with a colorful appearance on its head. The black tinge of this guppy species is typical. The Moscow guppy is easy to take care of and makes good first-time fish for beginners due to its peaceful nature. They are also very hardy, meaning they can withstand a wide range of water conditions.

These species of fish are perfect for beginners due to a number of reasons: they are easy to care for, they have a peaceful nature, and they can withstand a wide range of water conditions.

When it comes to caring for your Moscow guppy, there are a few things you need to keep in mind. First of all, you need to provide them with a good quality aquarium with filtration and plenty of plants. Moscow guppies prefer to live in groups, so you should aim to keep at least 6 of them together. They also need a diet of live food, such as brine shrimp or bloodworms.

To care for your Moscow guppy, you will need:

  • A good quality aquarium with filtration and plenty of plants
  • 6 or more Moscow guppies
  • A diet of live food, such as brine shrimp or bloodworms

As you can see, caring for a Moscow guppy is not difficult. These fish are very hardy and easy to care for, making them ideal for beginners. Additionally, their peaceful nature means they will get along well with other tank mates.

Read on to find out more about the care of Moscow guppies!

Moscow Guppy Size

One of the most appealing things about guppies is their small size. These fish only grow to be around 2.5 inches in length, making them perfect for small tanks. However, despite their small size, Moscow guppies still need a minimum tank size of 5 gallons. This is because they prefer to live in groups and need plenty of space to swim around.

Factors that can affect the size of your Moscow guppy include:

  • Genetics
  • The quality of their diet
  • The amount of space they have to swim
  • The water conditions in their tank

Moscow Guppy Lifespan

Moscow guppies have a lifespan of around 2 years. However, if they are well-cared for, they can live up to 3 years. Always remember to keep an eye on the water conditions in their tank and to provide them with a good diet. Also, make sure to regularly clean their tank to prevent the build-up of toxins.

If you are planning to put them together with other species, make sure they are of a similar size. Large fish can intimidate and even eat smaller fish, so it is important to provide them with tank mates of a similar size.

moscow guppy

Moscow Guppy Appearance

The Moscow guppy has a characteristic solid coloration with a brilliant texture on its head that is usually of a different hue. This species' males are particularly vivid and may be stunning. Male guppies, who are smaller than females, have ornamental caudal and dorsal fins. However, they're known for their long and flowing fins, which add to their appeal. The females, on the other hand, are a little drab in comparison but still have an elegant beauty about them. Females are also generally larger than males and can grow up to 3 inches in length.

Guppies have two sex chromosomes in addition to their 23 pairs of chromosomes. The genes that control male guppy's adornments are Y-chromosome linked.

Like any other guppies, these particular fish can be found in a wide variety of colors.

Moscow Guppy Varieties 

The Moscow guppy is a beautiful fish that is sure to add some color to your aquarium. These fish are available in a wide range of colors and patterns. A few of the common and most popular varieties include:

  • Black Moscow Guppy: Black Moscow Guppies have a black body hue and are characterized by the X-linked half-black attribute. They originate from Moscow, Russia, and get their name from the city they were born in. These guppies don't require much upkeep, perfect for beginner fish enthusiasts, and come in colors like solid blacks or dark grays. A single female can birth 6 to 8 fry per month which has given this species the nickname 'million fish'.
  • Electric blue Moscow Guppy: Blue Moscow is the primary type of Moscow, characterized by a black layer of color cells beneath a blue-light reflecting iridophore layer. Blue Moscow comes in several varieties, including albino blue Moscow, blond blue Moscow, Asian blue Moscow, and golden blue Moscow.
  • Red Moscow guppy: When we reach the ultimate red Moscow, it's tough to tell apart from a guppy with all of its colors. The full red Moscow is divided into two distinct groups: half black red Moscow and Albino whole red Moscow. Golden red Moscow is one of many different kinds of Moscow sold in the aquatic market.
  • Midnight black Moscow: Midnight black Moscow does not fade to grey or other colors; it is constantly black. Albino midnight black and golden midnight blackout are different varieties of midnight black Moscow.

Moscow Guppy Behavior

Moscow guppies are peaceful fish that do well in community tanks. They are not aggressive and get along with other fish species. However, occasionally, males can be territorial towards each other and may chase each other around. It is best to keep them in groups of at least 6 to avoid any aggression.

These fish are active swimmers and enjoy exploring their tanks. They are also known to be good jumpers, so make sure their tank is covered.

Moscow guppies are not known to be fin nippers but they may nibble on the fins of other fish if they are bored or hungry. It is important to provide them with plenty of hiding spots and places to explore to keep them from getting bored.

Moscow Guppy Tank Setup

Tank setup can be a very daunting task, especially if you are a beginner. But don't worry, we will guide you through everything you need to know in order to set up the perfect home for your Moscow guppies.

Tank Size

First things first, you will need a fish tank. The size of the tank will depend on how many fish you plan on keeping. A good rule of thumb is to allow at least 5 gallons of water for a small group of fish.

A larger tank is not required, but the benefit of having one is that it makes water quality more easily maintained. It's also more aesthetically attractive and gives your fish additional swimming room. If you want to house a large number of fish, we recommend at least 10 gallons of water.


Next, you will need to choose a filter for your tank. There are a variety of filters available on the market, so it is important to do your research to find the best one for your particular setup.

Some recommended filters for Moscow guppies are the fluvial internal filter and the Marineland Penguin power filter.

The importance of keeping a filter in your tank cannot be understated. A filter will help to keep the water clean and free of toxins that can harm your fish.


Another important consideration for your tank setup is the type of gravel you choose. Gravel can range in color, size, and material. The best gravel for Moscow guppies is small-sized gravel made of natural materials.

Some recommended types of gravel are Fluval aquarium gravel and Caribsea eco-complete planted aquarium substrate.

Your choice of gravel is important because it can affect the water quality in your tank. Natural materials will help to keep the water clean and free of toxins.


Lighting is another important aspect of your tank setup. The type of lighting you choose will depend on the plants you want to keep in your tank.

If you plan on keeping live plants, we recommend using a fluorescent light. This type of light is perfect for plant growth and will also help to show off the colors of your fish.

If you do not plan on keeping live plants, you can use an incandescent light. This type of light is not as bright as fluorescent light, but it will still provide enough light to see your fish.

Water Heater

The last piece of equipment you will need for your tank setup is a water heater. Moscow guppies prefer water that is between 75 and 82 degrees Fahrenheit.

We recommend using a submersible aquarium heater for your tank. This type of heater is easy to use and will help to maintain a consistent water temperature.

Water Parameters

Now that you have all the equipment you need for your tank, it's time to fill it up with water!

Before adding your fish, you will need to test the water to make sure the pH and ammonia levels are safe.

The ideal temperature for Moscow guppies is between 75 and 82 degrees Fahrenheit.

The ideal pH level for Moscow guppies is between 7.0 and 8.0.

The ideal ammonia level for Moscow guppies is 0 ppm.

If the levels of pH or ammonia are not within the safe range, we recommend using a water conditioner to adjust the levels.

The water conditioner is safe for fish and will help to remove toxins from the water.

To raise the pH level, there are a variety of products available on the market. We recommend using Seachem Prime or API pH Up. To lower the pH level, we recommend using Seachem Acid Buffer or API pH Down. To remove ammonia from the water, we recommend using a product like API Ammonia Remover. After adding the water conditioner, test the water again to make sure the levels are safe.

moscow guppy

Tank Decor

After your water is ready, it's time to add some fish! But before you do, you need to decide on the perfect tank decor.

Moscow guppies are not picky when it comes to tank decor. They will be happy with a variety of different decorations. Some popular choices are live plants, rocks, and driftwood.


Live plants are a great addition to any tank. They help to keep the water clean and provide hiding places for your fish. We recommend using live plants that are easy to care for, such as:

  • Java moss
  • Coontail
  • Cryptocoryne
  • Waterweeds
  • Anubias
  • Moneywort
  • Water Sprite
  • duckweed
  • Parrot's feather
  • Rotala Indica
  • Brazilian pennywort
  • Ludwigia ovalis
  • Salvinia
  • Hornworts

Artificial plants can also be used in place of real ones if you don't want to grow your own. Artificial plants are simple to maintain and come in a variety of hues and designs. That being said, always clean them thoroughly before adding them to your tank.


Rocks are another popular choice for tank décor. They help to create a natural-looking environment for your fish. We recommend using rocks that are safe for aquariums, such as:

  • Granite
  • Limestone
  • Slate
  • Sandstone
  • Beach rocks
  • Petrified wood
  • Aragonite

DO NOT use river rocks in your tank. River rocks can contain harmful toxins that will poison your fish.

Note: Select rocks that do not have pointed or sharp edges. These types of rocks can injure your fish.


Driftwood is an excellent decoration for any aquarium. It not only looks nice, but it also gives your fish refuge. We recommend using ones that are smooth and toxin-free. However, make sure the driftwood you pick doesn't exceed the width or length of your tank, as well as no sharp edges.

Although it is commonly thought that all wood used in aquariums must be driftwood, this does not have to be the case. In fact, most decorative wood for aquariums has never been exposed to the elements for extended periods of time. Even so, this artificial wood can still look great and function properly in an aquarium set-up.

We recommend using driftwood that is safe for aquariums, such as:

  • Mangrove
  • Bogwood
  • Coconut husk

Do not use driftwood that is treated with chemicals. These chemicals can be toxic to your fish.

Other Decorations

There are a variety of other decorations that you can use in your tank. Some popular choices are:

  • Caves
  • Bridges
  • Logs
  • Trees
  • Statues
  • Sinks
  • columns
  • Pagodas

The options are endless! Be creative and have fun with it. Just make sure the decorations you choose are safe for aquarium use. Clean it thoroughly before adding it to your tank.

moscow guppy

Adding Your Fish 

Now that your tank is all set up and the water is safe for fish, it's time to add your Moscow guppies!

When adding fish to your tank, it is important to do so slowly. We recommend adding no more than 6 fish per week. Adding too many fish at once can cause stress and lead to disease.

To add your fish, gently place them in the water one at a time.

After you have added all of your fish, it is important to monitor them closely for the next few days. Watch for signs of stress, such as rapid breathing or darting around the tank. If you see any of these signs, we recommend performing a water change and adding a stress reliever product to the water.

Moscow Guppy Tank Mates

Now that you have your Moscow guppies, you may be wondering what other fish make good tank mates.

The best tank mates for Moscow guppies are:

  • Glowlight tetras
  • Neon tetras
  • Platies
  • Swordtails
  • Mollies
  • Endlers
  • Danios
  • Barbs

There are certain things to keep in mind when choosing tank mates for your Moscow guppies. It is important to choose fish that are compatible in terms of size, temperament, and water requirements.

Note: Observe your fish closely after adding new tank mates. Remove any fish that seem to be causing stress or aggression.

Tank Maintainance 

Now that your tank is set up and you have added your fish, it is important to maintain the health of your aquarium.Here are some tips for maintaining a healthy aquarium:

Here are some tips for maintaining a healthy aquarium:

  • Perform a water change every 2 weeks.
  • Clean the filter every 2 weeks.
  • Test the water quality regularly.
  • Remove any uneaten food or debris from the tank.
  • Monitor your fish closely for signs of stress or illness.

By following these simple tips, you can ensure a happy and healthy environment for your fish.

Moscow Guppy Diet

Now that you have your Moscow guppies, it is important to provide them with a nutritious diet.

The best diet for Moscow guppies consists of:

 Live food: They are rich in protein and essential nutrients that your fish need. Some good options for live food are brine shrimp, daphnia, and bloodworms. Do not feed your fish live food more than 3 times per week. However, if you are trying to breed your fish, you will need to feed them live food daily.

Frozen food: Frozen food is a good alternative to live food. It is just as nutritious and can be stored for longer periods of time. Some good options for frozen food are brine shrimp, daphnia, and bloodworms. We recommend thawing the food before feeding it to your fish.

Flake food: Flake food is a type of commercial fish food that is widely available. It is a good option for Moscow guppies, but should not be the only type of food they eat. We recommend feeding your fish flake food 2-3 times per week.

Vegetables: Vegetables are a healthy option for Moscow guppies. Some good options include spinach, zucchini, and peas. We recommend blanching the vegetables before feeding them to your fish.

Feeding Tips

Now that you know what to feed your Moscow guppies, here are some tips for feeding them:

  • Feed your fish 2-3 times per day.
  • Give them only as much food as they can eat in 2 minutes.
  • Remove any uneaten food from the tank.
  • Do not overfeed your fish as this can lead to health problems.

By following these simple tips, you can ensure that your fish are getting the nutrition they need.

moscow guppy

Moscow Guppy Diseases 

Moscow guppies are relatively hardy fish, but there are some diseases that they are susceptible to. Some of the diseases that Moscow guppies can get include:


Ich is relatively simple to detect and is caused by an ectoparasite (ciliate protozoan Ichthyophthirius multifiliis), which makes it very easy to find. The fish begin rubbing their skin against rocks, plant leaves, or other objects in the aquarium. They can also lose their appetite. You will see tiny white dots on their skin and fins. To treat ich, you will need to raise the temperature of the water and do a partial water change. You may also need to treat the fish with an ich medication.

To cure ich:

  • Gently raise the water temperature to 80 degrees Fahrenheit
  • Add the ich medication to the recommended dose. You can also add aquarium salt at a rate of 1 teaspoon per gallon
  • Keep the water at this stage for 4-7 days and observe
  • Bring the water temperature back to normal gradually
  • Perform a Partial Water Change of about 70%


Velvet disease, while similar to ich, is less often seen in aquariums kept by hobbyists. A fish afflicted with velvet will have its body covered in tiny gold-colored dots, looking like grains of dust. Since this disease is highly contagious, it can quickly spread to all your other fish if you're not careful.

A fish's skin can be distinguished by its velvet. The dots are small, making it difficult to detect in the early stages. When the fish's skin begins to peel off and blood appears, fish keepers often discover too late that something is wrong.

To cure velvet:

  • Velvets can be treated with copper medication to cure them
  • To most effectively treat your aquarium, turn off the lights until the disease is gone
  • Once your fish are symptom-free, perform 70-90 percent water changes

Fin Rot

Rotting fins and tail is a bacterial infection in guppies, which manifests as the fish's fins and tail appearing to be stuck together. This can also be caused by a fungus that grows on nipped fins. In addition, poor water quality and ammonia burns are additional causes of rotting tails.

The cause of rotting fins is important to identify because the treatments for bacterial infection or fungus is different. If there is no damage to the fins and tail but there is a clear sign that they have started rotting, it is most likely caused by bacteria.

To cure fin tail rot:

  • The sick fish should be isolated
  • Treat it with antibiotics
  • If your fish has fin rot caused by a fungus, treat it with special medication – always follow instructions on the packaging
  • To prevent “ammonia burns”, it is important to provide your fish with high-quality water


Among fish, guppies are the most likely to contract the protozoan parasite. Although other fish can get sick from it too, guppies are by far the most common host for this tiny creature.

The parasite latches on to the fish's skin and works its way into the fish's body via their muscle until it reaches circulation.

This parasite usually develops in unheated tanks when water quality is poor.

To cure protozoan:

  • Add a heater to your fish tank so as to keep the water temperature consistent
  • This condition can be treated with early-stage Malachite Green or Formalin
  • In more advanced stages, copper medications such as Seachem Cupramine should be used
  • After treatment, change 50-70% of the water


Although this infection appears to be fungus, it is actually caused by bacteria. The colony of bacteria typically grows as a large white sludge on the fish's mouth or midsection. Because the illness slowly paralyzes their muscle, sick fish have difficulty swimming and lose their appetite.

The infection is highly transmissible and mostly affects female guppies, although male guppies can also be sickened if left untreated. If the disease isn't addressed, it has the ability to wipe out a tank's entire fish population.

To treat Columnaris and mouth fungus:

  • The quickest way to cure Columnaris is to start the treatment process as soon as you notice any symptoms.
  • This condition may be treated with Maracyn or Formalin, which are two common drugs.
  • Adding salt to your tank and aquarium salt can also help: perform a 50% water change and add one teaspoon of salt per gallon every day for three days after the water has been changed. Leave the salt in the water until your fish is completely healed.
  • A 30-minute potassium permanganate (KMnO4) bath can also cure Columnaris, although use this treatment carefully. Potassium permanganate is a powerful oxidizing agent; exceeding 10mg/l in the bath at your own risk can burn your fish.


The most common symptom of poor water quality is lethargy. If your guppy is listless and not interested in swimming around or eating, it's a sign that something is wrong.

Other symptoms include:

  • Gasping for air at the surface of the water
  • Clamped fins
  • White patches on the skin
  • Hanging at the bottom of the tank
  • Loss of appetite

If you notice any of these symptoms in your guppy, it's important to take action immediately. The sooner you address the problem, the better chance your fish has of recovering.


The best way to prevent infections and diseases is to keep a close eye on your fish and their environment. Follow these tips to help keep your fish healthy and happy:

  • Regularly check your fish for signs of illness and disease.
  • Perform regular water changes to keep the tank clean and the water quality high.
  • Don't overfeed your fish; uneaten food can pollute the water and lead to infection.
  • Avoid overcrowding your tank; more fish means more waste and a higher risk of disease.
  • Quarantine new fish before adding them to your tank.
  • Keep your aquarium clean and free of debris.


If you do notice signs of illness in your fish, it's important to take action immediately. The sooner you address the problem, the better chance your fish has of recovering.

Depending on the specific illness, there are a variety of treatment options available. Some common treatments include:

  • Water changes: Regular water changes are essential for maintaining a healthy aquarium. If your fish is sick, perform a water change and add an appropriate amount of aquarium salt.
  • Medications: There are a variety of medications available that can be used to treat infections and diseases. Be sure to follow the instructions carefully and consult a veterinarian if you're unsure about anything.
  • Aquarium salt: Adding aquarium salt to your tank can help to prevent and treat a variety of illnesses.

When treating your fish, it's important to follow the instructions carefully and consult a veterinarian if you're unsure about anything. With proper care, your fish will recover in no time.

moscow guppy

Moscow Guppy Breeding

Moscow guppies, like any other type of guppy, are livebearers. This means that they give birth to live young rather than laying eggs.

Guppies generally have anywhere from two to six babies at a time, although larger litters are not unheard of. The average gestation period for a guppy is around four weeks.

If you are a novice aquarist, follow the tips below to help ensure a successful birthing process:

  • Set up a breeding tank: It's important to have a separate breeding tank set up before your fish are ready to give birth. This will help to prevent the babies from getting lost or being eaten by other fish in the tank. The breeding tank should be at least 10 gallons in size and well-filtered. Temperature is not as critical for the breeding tank, but keep in mind that guppies prefer warmer water.
  • Condition your fish: Before attempting to breed your fish, it's important to condition them first. This means feeding them a high-quality diet and keeping the water quality in their tank high. Conditioning your fish will help to ensure a successful birthing process.
  • Introduce the male and female: Once your fish are ready to breed, it's time to introduce the male and female. The best way to do this is to place the male in the breeding tank first and allow him to acclimate for a few days. Then, add the female to the tank. It's important to avoid overcrowding the breeding tank, as this can lead to stress and aggression.
  • Gastational period: The female guppy will be pregnant for around four weeks. During this time, it's important to keep a close eye on her and make sure she is eating properly. It's also important to perform regular water changes to keep the tank clean and the water quality high.
  • Giving birth: After the female guppy gives birth, anywhere from 20 to 60 fry at a time, you should be ready with a net to catch them. The fry is born very small and vulnerable, so it is crucial that you have removed them from the breeding tank and placed them in their own separate tank within moments of being born.
  • Feed the fry. The fry will need to be fed several times a day. You can purchase special fry food, or you can feed them live baby brine shrimp. When the fry is about two weeks old, you can start feeding them adult guppy food.
  • Monitor the fry tank. The fry tank should be kept clean to prevent disease. You should perform a water change every week, and you should remove any uneaten food from the tank. When they are about four weeks old, the fry can be moved to a larger tank.

Frequent Questions

Are Moscow guppies rare?

No, Moscow guppies are not rare. They are a relatively common type of guppy and can be found in pet stores and online retailers. However, there are certain color morphs that are considered to be rarer than others.

How do I identify a Moscow guppy?

The tail and the hue of a Moscow guppy's head are the most reliable ways to tell one apart from other guppies. They have a solid color body.

How big do Moscow guppies get? 

The average Moscow guppy will grow to be about 2 inches to 3 inches in length. There are many factors that can affect the size of a guppy, such as diet and water conditions.

How do you breed purple Moscow guppies? 

You may breed purple Moscow guppies simply by purchasing a pair from a pet shop or an internet retailer. You'll need to purchase a pair of purple Moscow guppies once you've got yours. After that, you'll need to set up a breeding tank and care for your fish. Then you can put the male and female together and allow them to breed. The fry can be removed and put into their own tank once they are born. You'll need to feed them several times a day and keep the tank clean. When they are about four weeks old, the fry can be moved to a larger tank.

Do Moscow guppies have different colors?

Yes, Moscow guppies can come in a variety of colors, including black, red, blue, and green. The most common color morph is the blue Moscow guppy. Moscow green guppy, purple Moscow guppy, and yellow Moscow guppy are the rarest of this group.

What do Moscow guppies eat?

Moscow guppies are omnivorous and will eat a variety of foods, including pellets, flakes, live food, and frozen food. It's important to feed them a varied diet to ensure they are getting all the nutrients they need.


Moscow Guppies are a type of freshwater fish that originates from Russia. These little fish are incredibly popular among aquarium enthusiasts due to their vibrant colors and playful personalities. While they are certainly a beautiful addition to any home aquarium, it's important to remember that they are still living creatures and require proper care and attention. Moscow Guppies are social creatures that do best when living in groups. For this reason, it's recommended that you purchase at least six of them. A 5-gallon tank is a minimum size for a group of Moscow Guppies; however, regular water changes and monitoring their water quality are essential to keeping them healthy. They must be fed a varied diet of pellets, flakes, live food, and frozen food. Proper care and attention will ensure that your Moscow Guppy is happy and healthy for years to come. So what are you waiting for? Go out and get yourself some Moscow Guppies today!

Sarah Robertson

I am a passionate blogger who also happens to be a fish keeping enthusiast. Writing about my hobby is something that I absolutely love to do, and it's no secret that my chosen topic is always centered around fish keeping.

Sarah Robertson

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