April 27

Sarah Robertson

The Wonders of Blue Guppy: Why They Make Great Fish for Any Home

Guppies are the most popular freshwater aquarium fish for a reason: they are beautiful, easy to care for, and relatively low-maintenance. Blue guppies in particular are stunning creatures that come in a wide variety of shades and patterns. If you're thinking about adding some fish to your home, blue guppies are a great option to consider.

What is a Blue Guppy?

The blue guppy, a variation of Poecilia reticulata, is a popular fish among aquarium enthusiasts because of its beautiful colors and calm personality. They have beautiful, iridescent blue scales that can range in shade from a light powder blue to a deep navy. Blue guppies are also known for their long, flowing fins which add to their elegant appearance.

As with any other guppies, these fish species are native to Asia, Central America, and Brazil, but can be found in tanks all around the world. The blue guppy is also a good choice for beginner fish keepers because it is hardy and matures quickly.

A Quick Blue Guppy Fish Care Guide 

  • Scientific Name: Poecilia Reticulata
  • Common Name: Blue Guppy
  • Diet: Omnivores
  • Care Level: Easy
  • Compatibility: Peaceful
  • Ph: 6.0 to 8.0
  • Temperature: 72 – 80 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

Blue Guppy Care 

Blue guppies are easy to care for and make a great addition to any home aquarium. They are peaceful fish that do well in community tanks with other peaceful species. These guppies are known for their beautiful colors and long fins, but they are also easy to care for and relatively low-maintenance. However, there are a few things you should know about blue guppy care in order to ensure that your fish are happy and healthy.

When it comes to blue guppy care, one of the most important things to keep in mind is water quality. Blue guppies are native to tropical regions of Asia, Central America, and Brazil. In the wild, they typically inhabit slow-moving waters like ponds, swamps, and streams. These fish do best in aquariums that mimic their natural habitat as closely as possible. For example, your tank should have a sandy substrate and plenty of plants for the fish to hide in. These fish are very sensitive to changes in their environment and will not do well in water that is dirty or has a high ammonia content. It is important to test your water regularly and to do regular water changes in order to keep the tank clean. You should also avoid overfeeding your fish, as this can lead to water quality issues.

Another important aspect of blue guppy care is diet. In the wild, these fish are omnivores and their diet consists of live food, frozen food, and flake food. In captivity, you can provide your fish with a variety of commercially available foods. However, it is important to make sure that they are getting enough protein in their diet.

Read on to learn more about blue guppy care, including information on tank setup, diet, and compatible tank mates.

Blue Guppy Size 

The average blue guppy size is about 2.5 inches, but they can grow up to 3 inches long.

If you want your guppies to be as big and healthy as possible, pay attention to their diet and living conditions. Smaller-than-average guppies are usually the result of inbreeding or poor nutrition, so make sure to improve their food and water quality if you notice them on the small side. With the right environment and care, your guppies can reach their full potential size.

Blue Guppy Lifespan 

The typical blue guppy lifespan is 2-3 years, but they can live up to 5 years with proper care. Factors that will affect how long your guppy lives include diet, water quality, and stress levels. To help your fish live a long and healthy life, provide them with a clean tank and plenty of fresh food.

Blue Guppy Appearance 

As we mentioned, blue guppies are a variety of the Poecilia reticulata species, that are known for their long-flowing fins and bright and beautiful coloration.

The typical blue guppy has a powder blue navy-colored body with iridescent scales. Their fins can be clear but are often accented with blue, black, or yellow stripes. These color variations make blue guppies some of the most beautiful fish in the aquarium world.

Like all guppies, blue guppies have a single dorsal fin and an anal fin. They also have a caudal peduncle, which is the narrow part of their body between the tail and the main fins. This peduncle is used to help the fish move quickly through the water.

Blue Guppy Fish

Blue Guppy Variations 

There are many different color variations of blue guppies, which is part of what makes them so popular among fish enthusiasts.

  • Japanese Blue Guppy: The Japanese Blue Endler Guppy (or the Japanese Blue Swordtail Guppy if its tail has a swordtail) is a fancy guppy that looks like a cross between an Endler and a Swordtail. The color of the tail may be bright blue or start midsection and then travel towards the tip. The blue hue can fade away toward the head frequently.
  • Solid Blue Guppy/Electric Blue Guppy: Blue guppies vary in shades of blue, from electric to sky blue. The solid blue guppy is one of the most vibrantly colored fish, with a deep blue hue that covers its entire body.

  • Blue Cobra Guppy: The blue cobra guppies have a distinct look thanks to their vertical stripes and well-defined rosettes. The intricate pattern is more highlighted by the male guppies.

  • Neon blue guppy: The neon blue guppy is a related species of guppy. It has light blue tones. The neon blue hues of these fish shine when they swim in the water, creating distinctive neon-like glitter. The color of the neon blue guppy shifts depending on whether or not it has body or tail markings.

Gender Differences 

It is not hard to distinguish between male and female blue guppies.

  • Males are usually smaller than females and have much longer fins.
  • The males also tend to be more brightly colored than the females. They also have a gonopodium, which is a modified anal fin used for reproduction.
  • Females are larger, with shorter fins, and their colors are not as bright.

Blue Guppy Behavior 

Blue guppies are relatively peaceful fish that do well in community tanks. They are not known to be aggressive toward other fish, but the males can be aggressive toward each other. If you have a male and female blue guppy, they will likely get along well.

Blue Guppies are known to be active swimmers and they prefer to be in schools. In the wild, these fish live in slow-moving waters in South America.

In captivity, blue guppies do well in tanks with plenty of plants and hiding spots. They also prefer tanks with a lot of open space to swim.

Blue Guppy Tank Setup

Setting up a tank for blue guppies is not difficult. These fish are not picky eaters and they do well in a variety of water conditions. However, like any other fish, they need a clean and well-maintained tank to stay healthy.

Here are some tips for setting up a blue guppy tank:

Tank Size 

The minimum tank size for blue guppies is 5 gallons. However, if you want to keep more than a few fish, you will need a larger tank. There are many benefits to a larger tank, including more space for the fish to swim and very few water quality issues.

If you want to add diverse fish to your aquarium, keep in mind their size and requirements while choosing a tank size.

Water Conditions 

Blue guppies are not picky about water parameters. They can live in a wide pH range and a wide temperature range. However, they prefer neutral water with a pH of 6.5 to 8.0. The temperature of the water should be between 72 and 82 degrees Fahrenheit.

Be sure that your water is safe for fish by checking the levels of chlorine, ammonia, and nitrites. You can use a water conditioner to remove harmful chemicals from the water. The nitrates and phosphate levels should also be monitored, as too much of either can cause algae problems.


Blue guppies do not produce a lot of waste, so a simple filter is all that is needed to keep the water clean. A hang-on-back filter or a canister filter will work well for a blue guppy tank. Be sure to choose a filter that is rated for at least twice the size of your tank.

If you have a lot of plants in your aquarium, you may not need a filter at all. Plants help to keep the water clean by absorbing nitrates and other pollutants.


Blue guppies do not need special decorations, but if you want to make your aquarium more attractive, there are many options available.

Driftwood and rocks 

These fishes like to hide when they are feeling stressed, so having some driftwood or rocks in your aquarium will give them a place to hide. Also adding this driftwood and stones to your aquarium might give it a more natural appearance. Make sure the pieces you pick are suitable for aquariums and won't affect the water quality. Touch it and make sure there aren't any sharp or jagged edges that could harm your fish. Before adding it to your tank, clean it thoroughly.


Blue guppies do not need live plants, but they do benefit from them. Plants help to keep the water clean and provide hiding spots for the fish. Live plants also add oxygen to the water.

Some good plant choices for blue guppy tanks include:

  • Java moss
  • Hornwort
  • Anacharis
  • Water sprite
  • Ludwigia

If you can't find these plants in your area, you can also add artificial plants to your tank. Be sure to choose plants that are safe for fish and made from non-toxic materials. Wash them well before adding them to the tank.


Blue guppies do not need a special substrate, but they do need some type of substrate to anchor their plants. A gravel substrate is a good choice for blue guppy tanks. Be sure to choose a substrate that is small enough so that the fish cannot swallow it.

In case you are planning to keep live plants in your aquarium, you will need to add a nutrient-rich substrate. A good choice for live plants is an aquarium soil substrate.


Blue guppies do not need special lighting, but they do benefit from some type of light. Live plants will do best with a full spectrum LED light. This type of light promotes plant growth and also enhances the colors of the fish.

If you are not planning to add live plants to your tank, you can choose any type of light that you like. Blue LED lights are a good choice for blue guppy tanks.

Blue Guppy Tank Mates 

Blue guppies are peaceful fish, so they can be kept with a wide variety of tank mates. Some good choices for blue guppy tank mates include:

  • Neon tetras
  • Guppies
  • Platies
  • Swordtails
  • Mollies
  • Danios
  • Barbs
  • Corydoras catfish

Do not keep blue guppies with fish that are known to be aggressive or nippy. These fish will stress the blue guppies and may even cause them to die. Some bad choices for blue guppy tank mates include:

  • Betta fish
  • Goldfish
  • Sharks

If you are adding blue guppies to an existing aquarium, be sure to choose tank mates that are compatible with them in terms of water parameters.

Note: Observe your fish closely when you first add them to the tank. Some fish may appear to be peaceful at first, but they may become aggressive as they grow larger. In case of any aggression, remove the aggressor immediately.

Tank Maintenance 

Blue guppies are easy to care for, but they do require some basic tank maintenance.

  • Be sure to do a partial water change at least once a week. This will help to keep the water clean and remove any toxins that may have accumulated in the tank. To do a partial water change, remove 10-15% of the water from the tank and replace it with fresh, clean water.
  • Clean the filter regularly. This will help to remove any debris or waste that has accumulated in the filter media. Most filters will need to be cleaned every 2-4 weeks.
  • Be sure to vacuum the gravel and clean any algae that have accumulated on the glass. This will help to keep the tank looking clean and prevent the build-up of toxins.

Note: While changing the water, make sure to use a water conditioner to remove any chlorine or other chemicals that may be present in the tap water. If you do not have a water conditioner, you can use aged water that has been left out for 24 hours.

Blue Guppy Fish

Blue Guppy Diet 

Blue guppies are not picky eaters and will accept most types of fish food. flakes, pellets, frozen, and live food.

To keep your blue guppies healthy, it is important to feed them a varied diet. They should be fed several times a day, but only as much as they can eat in 2-3 minutes.

Here are some good food choices for blue guppies:

  • Flakes or pellets: Blue guppies will accept most types of fish food, but they should be given a high-quality diet of flakes or pellets. Read the ingredient label to make sure the food you are choosing is high in protein and does not contain fillers or artificial colors.
  • Live food: Live food is a great way to add variety to your blue guppy's diet. Live food contains more nutrients than pellets or flakes and will help keep your fish healthy. Some good choices for live food include brine shrimp, daphnia, and blackworms.
  • Frozen food: Frozen food is a good alternative to live food. It is more convenient and easier to store than live food. Be sure to thaw the food before feeding it to your fish.
  • Vegetables: Blue guppies also like to eat vegetables. You can offer them blanched spinach, zucchini, and peas. Be sure to remove any uneaten vegetables from the tank so they don't decompose and pollute the water.

What Not To Feed 

There are a few things you should avoid feeding your blue guppies:

  • Foods high in fat: Foods that are high in fat can cause obesity and health problems in fish. Avoid feeding your blue guppies food that is high in fat, such as fried foods or processed foods.
  • Foods high in salt: Salt can be harmful to fish if they are exposed to too much of it. Avoid feeding your blue guppies food that is high in salt, such as chips or pretzels.
  • Mealworms: Mealworms are high in chitin, which can be harmful to fish if they eat too much of it. Chitin is a substance that is found in the exoskeletons of insects. It is not digestible by fish and can cause health problems if they eat too much of it.

Feeding Tips

Here are a few tips to help you with feeding your blue guppies:

  • Offer a variety of foods to keep your fish healthy.
  • Feed your fish several times a day, but only as much as they can eat in 2-3 minutes.
  • Remove any uneaten food from the tank so it does not decompose and pollute the water.
  • Use high-quality fish food to ensure your fish are getting the nutrients they need. Water Quality.

Blue Guppy Diseases 

Blue guppies are relatively hardy fish, but there are some diseases that they are susceptible to.

Some of the diseases that blue 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 are 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.

Blue Guppy Breeding

If you're interested in breeding guppies, it's important to know that they reproduce quickly and can easily overpopulate a tank. Guppies are also livebearers, meaning they give birth to live young instead of laying eggs.

To breed guppies, follow these steps:

  • Choose a breeding pair of guppies. The male should have large, colorful fins, and the female should be plump with a gravid spot. It is better to select a young pair of guppies, as they will be more likely to produce healthy offspring. For increasing the chance of breeding, it is recommended to select 3 or 4 young pairs.
  • Set up a breeding tank. The breeding tank should be at least 10 gallons, and it should have plenty of hiding places for the female guppy. You can use live plants or plastic plants for this purpose. It's also important to have a fine-mesh net to catch the fry (baby fish). The temperature of the breeding tank should be 75-80 degrees Fahrenheit.
  • Introduce the breeding pair to the tank. Once you've set up the breeding tank, it's time to add your guppies. Allow them to acclimate to their new environment for at least an hour before releasing them into the tank.
  • Wait for the fry to be born. The female guppy will give birth to anywhere from 20 to 60 fry at a time. The fry is very small and vulnerable, so it's important to have a net ready to catch them. Once the fry is born, it should be removed from the breeding tank and placed in its own tank.
  • 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.
Blue Guppy Fish

Frequent Questions

Can guppies be blue? 

Guppies can be blue, but they are not a naturally occurring color. Blue guppies are the result of years of selective breeding by aquarists. There are different types of blue guppies, such as Japanese blue Endler guppy, solid blue guppy or electric blue guppy, blue cobra guppy, and neon blue guppy.

How long do blue guppies live?

Blue guppies typically live for two to three years, but some have been known to live more than that. The average lifespan of a guppy is shorter if it is kept in poor conditions or if it is not well cared for.

Why is the blue bubble guppy always sad?

There could be several reasons why your blue bubble guppy appears to be sad. It could be that the tank is too small, there are not enough hiding places, the water quality is poor or the temperature is too low. It's important to observe your fish and see if there are any other signs of illness or stress. If you can't determine the cause, it's best to consult a veterinarian or aquarist.

Blue and orange guppy produces what color fry?

If you breed a blue and orange guppy, the fry will be a mix of both colors. The exact coloration will depend on the genes of the parents. Some of the fry will be blue, some will be orange and some will be a mix of both colors.

White and blue guppy make what color guppy?

If you breed a white and blue guppy, the fry will be a mix of both colors. The exact coloration will depend on the genes of the parents. Some of the fry will be white, some will be blue and some will be a mix of both colors. However, it is also possible for all of the fry to be one color or the other.

How to get the blue guppy in the virtual tank?

The blue guppy is a rare fish in the virtual tank game. To increase your chances of getting a blue guppy, you should try to get as many coins as possible. You can get coins by completing tasks, winning battles, and selling fish. You can also buy them with real money. Once you have enough coins, you can buy a blue guppy from the store.

Why does my old blue guppy stay over the bubbler in a fish tank?

There could be several reasons why your blue guppy is staying over the bubbler in the fish tank. It could be that the water quality is poor and the bubbler is providing oxygen to the fish. It could also be that the fish is not feeling well and is seeking out the bubbler for comfort. If you notice any other signs of illness, it's best to consult a veterinarian.

How often do blue guppies need to be fed?

Blue guppies should be fed two to three times a day. You can purchase special guppy 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.

Do blue guppies need a filter?

Guppies do not need a filter, but it is recommended to keep the tank clean. You should perform a water change every week, and you should remove any uneaten food from the tank. A filter can help to keep the water clean and can also provide oxygen to the fish.

Summing Up

Blue guppy is beautiful, hardy fish that make a great addition to any home aquarium. They are easy to care for and reproduce quickly, making them ideal for both beginner and experienced fish keepers alike. Guppies are also relatively peaceful fish, getting along well with other species in the tank. They can be kept with a variety of different fish, such as mollies, swordtails, platies, and tetras. Guppies love to swim and explore, so it's important to provide them with a tank that is at least 5 gallons. If you want to decorate your tank with live plants, guppies are a great choice because they will not eat the plants. Blue guppies are sure to add a splash of color and excitement to your aquarium. Blue guppies are omnivorous, meaning they will eat both plants and animals. In the wild, their diet consists of algae, small insects, and crustaceans. In the aquarium, you can feed them a variety of different foods, such as live baby brine shrimp, flakes, pellets, and freeze-dried foods. It's important to provide them with a varied diet to ensure they are getting all the nutrients they need. So, what are you waiting for? Go out and get yourself some blue guppies and enjoy watching them swim and play in your aquarium.

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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