Blue Moscow Guppy Care Guide: Breeding, Tank size, Disease Prevention and More…

Blue Moscow Guppy Care Guide

Table of Contents

Blue Moscow Guppy Care Guide: Breeding, Tank size, Disease Prevention and More…

The Blue Moscow Guppy, scientifically known as Poecilia reticulata, Blue Moscow guppies are a popular breed of guppy that is known for its bright blue coloration. They are relatively easy to care for and breed, making them a good choice for both experienced and beginner aquarists.

Guppies, often referred to as “rainbow fish,” belong to the Poeciliidae family and hail from the clear waters of South America, particularly in countries like Venezuela and Trinidad. These small, livebearing fish have become synonymous with versatility, making them an excellent choice for both novice and experienced aquarists.

In this blue moscow guppy care guide, we’ll explore topics such as guppy food, diseases, lifespan, and behavior. We’ll delve into the nitty-gritty of setting up guppy tanks, choosing suitable tank mates, and the art of breeding guppies, including the stunning Blue Moscow variety. Additionally, we’ll discuss the benefits of incorporating live plants in your aquarium and how they can create a thriving ecosystem for these charming fish.

Common NamesBlue Moscow Guppies
Scientific NamePoecilia reticulata
Size of the Fish1.5 to 2 inches (3.8 to 5 cm)
Difficulty ScoreBeginner-friendly
Minimum Tank Size10 gallons (38 liters) for a small group
Best Compatible Tank MatesOther guppy varieties, Swordtails, Mollies, Corydoras Catfish
ColorationVibrant shades of blue
DietHigh-quality flakes, live and frozen foods, occasional vegetable matter
Water ParametersTemperature: 72°F – 82°F (22°C – 28°C), pH: 6.8 – 7.8, Hardness (GH): 8 – 12 dGH
BreedingProlific livebearers, separate breeding tank for fry
LifespanAbout 2 to 3 years
BehaviorPeaceful and active swimmers
Tank SetupHeavily planted, proper filtration, and stable temperature
AvailabilityVariable, may require searching specialty stores or online sources
Special FeaturesAttractive, long flowing fins
Selectively BredResult of selective breeding for blue coloration
Source: Wikipedia

What is a Blue Moscow Guppy?

A Blue Moscow Guppy is a specific and highly sought-after variety of the common aquarium fish, the Guppy (Poecilia reticulata). These guppies are characterized by their stunning blue coloration, which sets them apart from other guppy varieties. Blue Moscow Guppies have a vibrant and iridescent blue hue covering their bodies, which can range from light blue to deeper shades of blue.

These fish are a product of selective breeding, which has been carried out to enhance and stabilize the beautiful blue coloration. Moscow Guppies, which are the ancestors of the Blue Moscow variety, were originally from Russia and Ukraine. Through careful breeding practices, the striking blue color became a defining feature of the Blue Moscow Guppy.

In addition to their captivating blue color, Blue Moscow Guppies generally have long and flowing fins, which add to their visual appeal. Their small size, peaceful nature, and adaptability to a wide range of water conditions make them a popular choice for both beginners and experienced aquarists. These guppies are often used in breeding programs to create and maintain their unique coloration, making them a valuable and beloved addition to freshwater aquariums.

The Origins of Blue Moscow Guppy

The Blue Moscow Guppy originated in Russia and Ukraine, and it is a result of selective breeding. It’s believed that the original Moscow Guppy had a wild-type coloration and a unique, plump body shape. Over time, selective breeding led to the development of the striking blue Moscow variety. The intense blue coloration in these fish is a result of specific genetic traits, and it’s essential to maintain this trait through careful breeding practices.

Blue Moscow Guppy Appearance

Blue Moscow Guppy Care Guide

One of the primary attractions of Blue Moscow Guppies is their stunning appearance. These fish exhibit unique characteristics that make them stand out in any aquarium.

Blue Moscow Guppy Color Characteristics

  • Coloration: As the name suggests, Blue Moscow Guppies are predominantly blue in color, with varying shades of blue across their bodies. Males often have brighter and more vibrant colors than females.
  • Fins: Their fins are typically long and flowing, with a transparent appearance, which beautifully complements their blue body.
  • Size: Blue Moscow Guppies are relatively small, with males growing to about 1.5 to 2 inches (3.8 to 5 cm) and females being slightly larger, reaching up to 2.4 inches (6 cm).
  • Body Shape: They have an elongated body shape with a slightly upturned mouth, which gives them an endearing expression.

Blue Moscow Guppy Tank Size and Setup

Proper tank size and setup are crucial for the health and well-being of your Blue Moscow Guppies.

Setting Up the Perfect Home for Your Blue Moscow Guppies

Creating a cozy and safe space for your Blue Moscow Guppies is super important. We’ll break down how to set up a guppy tank in simple steps, perfect for both beginners and experienced fish lovers.

Tank Size and Requirements:

Tank Size: First, you need to pick the right tank. For a small group of Blue Moscow Guppies, a 10-gallon tank is just right. If you can, go bigger with a 20-gallon long tank, so your fish have more room to swim and play. Bigger tanks are also easier to keep clean, which keeps your guppies healthy.

Filter: A good filter is like a superhero for your tank. It keeps the water clean and healthy for your guppies. The Aquaclear HOB filter or a sponge filter are both great choices. Aquaclear filters are awesome because they work really well, and they’re easy to take care of. Sponge filters are gentle, which is great for guppy babies. They’re like a cozy hideout for the little ones.

Substrate: The stuff at the bottom of the tank is called the substrate. Guppies like fine gravel or sand. It’s comfy for them, and it looks natural. CaribSea and Seachem are brands that make good substrates. Be sure to rinse it well before you put it in the tank to get rid of any dust and dirt.

Heater: Guppies are tropical fish so they need warm water. To keep the temperature just right, you need a heater. Heaters from brands like Eheim, Fluval, and Aqueon are super at keeping the water just the way guppies like it. Make sure to pick a heater that’s the right size for your tank.

By following these steps, you’ll have a comfy home ready for your Blue Moscow Guppies. They’ll love the space, the clean water, and the warmth. Plus, you can watch them swim and play in their beautiful tank. So, get started and enjoy your underwater adventure with your guppy friends!

Blue Moscow Guppy Water Parameters

Maintaining the right water parameters is essential for the well-being of your Blue Moscow Guppies.

Water Parameters

ParameterOptimal Range
Temperature72°F – 82°F (22°C – 28°C)
pH Level6.8 – 7.8
Hardness (GH)8 – 12 dGH
Ammonia/Nitrites0 ppm
Nitrates< 40 ppm

Guppies are adaptable fish, but maintaining stable and appropriate water conditions is crucial to prevent stress and diseases.

Feeding Your Blue Moscow Guppies: A Tasty Adventure

Blue Moscow Guppy Care Guide

Feeding your Blue Moscow Guppies is like hosting a delicious buffet for your underwater friends. Let’s dive into what to feed them, including some yummy options you can find online.

Guppy Food Basics:

  • High-Quality Flakes: Blue Moscow Guppies love high-quality flake food. It’s like their favorite snack! Brands like Tetra and Hikari offer great options. TetraMin Tropical Flakes and Hikari Micro Pellets are popular choices. These flakes are packed with all the good stuff guppies need to stay healthy and show off their beautiful colors.
  • Live and Frozen Foods: Sometimes, your guppies need a fancy dinner. Live or frozen foods like brine shrimp, daphnia, and bloodworms are a real treat. You can find frozen food options from brands like San Francisco Bay Brand, Omega One, and Hikari. For brine shrimp, you can get San Francisco Bay Brand Freeze-Dried Brine Shrimp. Your guppies will swim with joy when they see these tasty bites.
  • Vegetable Snacks: Guppies also enjoy a veggie snack now and then. Think of it as their salad. Blanched spinach or cucumber slices are like their crunchy treats. Just make sure to remove any uneaten veggies after a few hours, so they don’t mess up the water.
  • Feeding Routine: Feed your guppies 2-3 times a day, but only what they can eat in about 2-3 minutes. Don’t overfeed them; it can make the water messy, and we want to keep their home clean and comfy!

Guppy feeding options that you can find online:

  • TetraMin Tropical Flakes: These flakes from Tetra are a guppy favorite. They’re packed with all the nutrients guppies need to stay strong and colorful. You can find TetraMin Tropical Flakes on popular online marketplaces like Amazon.
  • Hikari Micro Pellets: Hikari’s Micro Pellets are specially made for smaller fish, like guppies. They’re easy to eat and help guppies grow well. You can order Hikari Micro Pellets online from reputable websites like Chewy.
  • San Francisco Bay Brand Freeze-Dried Brine Shrimp: Treat your guppies to a gourmet meal with freeze-dried brine shrimp from San Francisco Bay Brand. It’s like seafood for your fishy friends. You can find this delicious option on websites like Petco.
  • Omega One Frozen Bloodworms: Omega One offers high-quality frozen bloodworms that your guppies will adore. These are available for purchase on websites like Chewy.

Remember, when shopping online for guppy food, read reviews and check the seller’s ratings to make sure you’re getting top-quality products. Your guppies will thank you for the tasty meals, and you’ll love watching them grow, thrive, and flaunt their vibrant Blue Moscow colors. Feeding time is a chance to bond with your fish and make sure they’re happy and healthy. Enjoy the feeding frenzy!

Blue Moscow Guppy Diseases, Treatment, and Prevention

Guppies, including Blue Moscow Guppies, are susceptible to various diseases. Being informed and proactive is essential to keep your fish healthy.

Common Diseases

Ich (White Spot)White cysts on the body and fins, flashing behaviorUse a suitable ich treatment. Raise the temperature to 86°F (30°C) to speed up the parasite’s life cycle.
Fin RotTorn, frayed, or disintegrating finsIsolate affected fish and treat with antibiotics. Improve water quality.
DropsyBloated appearance, raised scalesIsolate affected fish, treat with antibiotics, and improve water quality.

Preventing diseases is as crucial as treating them. Maintain excellent water quality, avoid overstocking, and quarantine new fish before adding them to your main tank.

Blue Moscow Guppy Tank Mates

Choosing suitable tank mates is essential to ensure a peaceful and harmonious aquarium community.

Compatible Tank Mates

Avoid aggressive or nippy fish like some tetras and barbs, as they may stress or harm your Guppies.

Blue Moscow Guppy Breeding

Breeding Blue Moscow Guppies can be a rewarding experience. These fish are prolific breeders, and their vibrant colors make the offspring equally stunning.

Breeding Tips

  • Separate Breeding Tank: Set up a separate breeding tank with fine-leaved plants or a breeding trap.
  • Mating Behavior: Blue Moscow Guppy males display courting behavior, often zigzagging in front of females. Females can store sperm, so one mating can result in multiple pregnancies.
  • Gestation Period: The gestation period is approximately 21-30 days, after which the female gives birth to live fry.
  • Fry Care: Transfer the fry to a separate nursery tank to protect them from being eaten by adult fish. Provide them with finely crushed flakes and baby brine shrimp.

Blue Moscow Guppy Plants

Incorporating live plants into your Blue Moscow Guppy’s tank not only enhances the aesthetics but also contributes to their well-being.

Recommended Plants

  • Java Moss: This moss provides ample hiding places for fry and helps maintain water quality.
  • Amazon Sword: Its broad leaves offer shelter and mimic their natural habitat.
  • Hornwort: An excellent option for adding vertical elements to the tank. It also provides cover for fry.
  • Anacharis: This fast-growing plant helps with water filtration and oxygenation.
  • Duckweed: Floating plants like duckweed offer shade and security, especially for the Blue Moscow Guppy fry.

While live plants can thrive in Blue Moscow Guppy tanks, it’s essential to monitor their growth and trim them as needed to prevent overcrowding.

Are Blue Moscow Guppies Rare?

Blue Moscow Guppies, while not extremely rare, are considered a specialty variety. They may not be as readily available as the more common guppy strains, but they are still popular in the aquarium hobby. The availability of Blue Moscow Guppies can vary depending on your location and the suppliers in your area. You may need to visit reputable local fish stores or search online to find these beautiful guppies. Keep in mind that the popularity of guppy strains can fluctuate, and some passionate breeders may specialize in Blue Moscow Guppies, making them more accessible.

How Many Guppies Should I Keep Together?

For beginners and small tanks, it’s recommended to keep a small group of guppies together. A good starting point is to keep 3 to 5 guppies in a 10-gallon tank. This allows them to socialize and exhibit their natural behaviors. However, if you have a larger tank, you can keep more guppies. Just be cautious not to overcrowd the tank, as proper space and water quality are essential for their well-being.

How to Take Care of Guppies for Beginners:

Taking care of guppies is perfect for beginners in the aquarium hobby. Here’s a simple guide:

  1. Tank Setup: Set up a tank with appropriate size and equipment. Follow the guidelines mentioned earlier, which include filtration, substrate, and plant choices.
  2. Water Parameters: Maintain clean water with the right temperature (72°F to 82°F or 22°C to 28°C), pH level (6.8 to 7.8), and hardness (8 to 12 dGH).
  3. Feeding: Feed high-quality flake food and occasionally supplement with live or frozen foods. Remember not to overfeed.
  4. Tank Mates: Choose peaceful tank mates that are compatible with guppies, such as other guppy strains, swordtails, mollies, and small catfish like Corydoras.
  5. Disease Prevention: Keep an eye on your guppies for any signs of illness. Prevent diseases by maintaining excellent water quality and quarantining new fish before adding them to the tank.
  6. Breeding: Guppies are prolific breeders. If you want to breed them, separate fry from adult guppies to protect the little ones and provide proper care.
  7. Enjoy: Most importantly, enjoy watching your guppies. They are active and colorful fish that can provide hours of entertainment.

Do Guppies Need a Cycled Tank?

Yes, guppies, like most aquarium fish, benefit from a cycled tank. A cycled tank means that beneficial bacteria have established themselves in the aquarium and can convert harmful ammonia and nitrites into less harmful nitrates. This biological filtration process helps maintain good water quality, which is essential for the health of your guppies.

Cycling a tank is especially important in the early stages of setting up your aquarium. It ensures that your tank is capable of handling the waste produced by your guppies and helps prevent harmful spikes in ammonia and nitrite levels. To cycle a tank, you can add a source of ammonia (e.g., fish food or pure ammonia) and allow the beneficial bacteria to develop over a few weeks. Once the tank is cycled, it’s ready for your guppies.

In summary, Blue Moscow Guppies are not extremely rare but are considered a specialty variety. For beginners, start with a small group of guppies, maintain proper tank conditions, and ensure your tank is cycled to provide the best care for these lovely fish. Enjoy your guppy-keeping journey!


Blue Moscow Guppies are a striking addition to any aquarium, admired for their captivating colors and unique appearance. To ensure the well-being of these beautiful fish, it’s crucial to pay attention to tank size and setup, maintain proper water parameters, provide a balanced diet, and be vigilant about diseases and their prevention. When considering tank mates, compatibility is key, and for those interested in breeding, following best practices will lead to a rewarding experience. By incorporating live plants, you create an environment that not only showcases their beauty but also supports their health. Whether you’re a seasoned aquarist or a beginner, Blue Moscow Guppies can be a fascinating and rewarding addition to your aquatic hobby.

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Lee Johnson

Lee Johnson

Aquarium Enthusiast

I love sharing my knowledge about all things aquarium related. I have been keeping aquariums for over 20 years and cannot imagine a life without an aquarium. 

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