April 24

Sarah Robertson

Why the Black Guppy is Special and How to Take Care of Them

The black guppy is a special variety of the popular freshwater aquarium fish. They are prized for their unique coloration, which can range from a deep charcoal black to a shimmering blue-black. Black guppies are also known for their outgoing personalities and their ability to thrive in a wide range of aquarium conditions. These fish are undoubtedly one of the most popular in the hobby. Many fish stores recommend these fish as suitable for first time fish owners.

What makes black guppies so special is their unique coloration. The black color of this fish stands out in any aquarium and creates a stunning visual effect. These fish are also known for their outgoing personalities and their ability to thrive in a wide range of aquarium conditions. Black guppies are simple to care for, but will generally struggle with a cycling tank and would most likely perish, therefore they should not be added to a tank until the cycle is over. You will need to provide them with a well-planted aquarium with plenty of hiding places. These fish are not fussy eaters and will accept most types of food. They are also known to be reasonably good jumpers, so a tight fitting lid is essential.

If you're thinking about adding black guppies to your aquarium, it's important to understand their basic care requirements. In this article, we'll give you some tips on how to take care of black guppies and ensure they thrive in your aquarium.

Quick Facts about Black Guppy

  • Common name: Black Guppy
  • Scientific name: Poecilia Reticulata
  • Place of Origin: The Guppy, which is from South America, was discovered in Mountain Streams and brackish rivers. You can now find wild populations of Guppies in countries such as Venezuela, Trinidad, Barbados, Singapore and the USA.
  • Average Adult Fish Size: Males 5 cm, Females 6 cm
  • Average purchase size: 1 - 1.5 inches (2.5 - 3.8 cm) or larger
  • Life span: 2 - 3 years, with some reports of 5 years in optimal conditions.
  • Minimum Aquarium Capacity: 5 gallon / 20 litre
  • Temperature: 21 – 28 Deg C / 72 – 82 Deg F
  • pH: 6.8 to 7.5 – Although water chemistry is not critical for these fish, they prefer slightly acidic water. Salt is optional, only some, not all wild guppies live in brackish conditions.
  • Ammonia: 0 ppm
  • Nitrite: 0 ppm
  • Temperament: Peaceful community fish
  • Compatibility: Tetra’s, Mollie’s, and Platy's are all peaceful tank mates suitable for keeping with Guppies.
  • Breeding: Livebearers – Guppies give birth to live young.
  • Ease of breeding: Easy

Black Guppy Care 

Guppies are easy to care for fish that make a great addition to any community aquarium. They are peaceful, hardy, and reproduce readily in the home aquarium. Guppies will do well in most freshwater aquariums with a few basic requirements.

Guppies live in the top layer of water, although they may be seen swimming and feeding throughout the middle and lower levels as well. Guppies are relatively safe with other nonaggressive fish, as long as the other fish aren't known to nip at their lengthy tail. adult dwarf shrimp are also harmless; however, guppies tend to eat the fry of shrimp. Guppies do best when kept in groups with other peaceful invertebrates.

The Black Moscow Guppy is not picky when it comes to food and will do well on a diet consisting of various meats. Small amounts of high-quality flake food, pellets, and frozen or freeze-dried meals will all be readily accepted.

Black Guppy Size

Males will grow to be about 2.5 cm (1 inch) in length, while females can reach 3.8 cm (1.5 inches).

Their size is relatively small, which is why they are such a popular choice for people with smaller aquariums.

Black Guppy Lifespan 

In the wild, Black guppies have a lifespan of about two to three years. However, in captivity, with proper care, they can live up to five years. The lifespan of black guppies is also affected by their environment, diet, and tank mates. When compared to female guppies, male Black guppies have a longer lifespan. Female guppies go through a lot of stress during their lifetime as they constantly give birth to fry.

black guppy

Black Guppy Appearance

Males of the black guppy variety have beautiful, deep coloration and an elegant long tail. Females are much rarer and as a result, often sell at a higher price. Their whole body is a dark black color, with their fins being a slightly lighter shade. Black guppies have the same basic body shape as other types of guppies, with a torpedo-shaped body and a large caudal (tail) fin. You can tell male guppies from female guppies by their size - males are smaller and females are larger. Black guppies even come in a variety of patterns and colors, such as Half Black Guppy, Metal Black Guppy, Full Black Guppy, and Black Bubble Guppy. Etc.

Half Black Guppy/HB Black Guppy: As their name suggests, these guppies are half black and half another color. The other color is usually blue, but it can also be yellow, green, orange, or even white. Black and White Guppy is a very popular color combination. The half black guppy is a beautiful, peaceful fish that does well in most tanks. They are hardy and have lots of energy. Their long tails and fins make them tempting targets for other fish though, so it’s best to keep them in a “guppy only” tank where they will be safe from attacks.

Full Black Guppy: As their name suggests, these guppies are entirely black.

Black Bubble Guppy: These guppies have black bodies with white spots that resemble bubbles.

Metal Black Guppy: These guppies have a black body with iridescent scales that give them a metallic appearance.

Moscow Jet Black Guppy 

The Moscow guppy is a species of freshwater fish that originates from Russia. It arrived in East Germany and quickly spread to other areas from there. The Moscow guppy, which is very popular, is known for being a solid color with a colorful texture on its head. The Moscow Jet Black guppy is a beautiful fish that stand out in any aquarium because of its sleek, all-black coloring and elegant, long tails! The pigmentation in Moscow black is several times higher than other colors, resulting in its well-known ability to change shades, going from a light grey to almost black.

Other types of black guppies include those with Black Spots on the guppy belly and Black Tail guppy.

Black Guppy Behavior 

Black guppies are very peaceful fish and get along well with other peaceful tank mates. They are not aggressive and will not bother other fish in the tank. Black guppies are active swimmers and do best in tanks that have plenty of hiding places. They like to hide among plants and decorations in the tank. Black guppies are very hardy and adaptable fish, which is why they are such a popular choice for beginner fish keepers. They are great for living at the top of the aquarium. But we can see them easily in the middle and bottom levels too. They are good jumpers too, so make sure your aquarium has a tight-fitting lid. While catching them using a net you should be careful as their fins are very delicate and can easily be damaged. They are not easy to catch. They hide a lot and are very good at camouflaging themselves.

Black Guppy Feeding & Diet 

Black guppies are not fussy eaters and will accept most aquarium foods. They are omnivorous, which means they eat both plant and animal matter. In the wild, their diet consists of algae and small invertebrates. In the aquarium, you can feed them a variety of foods, such as flakes, pellets, live food, frozen food, and vegetables. Black guppies should be fed two or three times a day, in small amounts that can be easily consumed in a few minutes. It is very important not to over-feed your Guppy. Overfeeding can lead to pollution in the tank and health problems for the fish.

You can buy flake food that is specially made for tropical fish, such as the Guppy, at your local fish store. Flake foods are excellent for the Guppy, but they should be supplemented with live food. Flake food alone will sustain your Guppy, but live foods help to make him or her more well-nourished and healthier. Both live and frozen Brine shrimp are popular Guppy fish foods since they are easy to produce at home. Other good options include:

  • Bloodworms
  • Micro Worms
  • Fruit Flies
  • Mosquito larvae
  • Daphnia
  • Chopped up Earthworms

You can also feed your black guppy vegetables, such as cucumber, lettuce, zucchini, and spinach. Guppies generally like all kinds of vegetables, but you should experiment to see which ones your fish prefer. Vegetables are a good source of vitamins and minerals for the Guppy, and they help to keep the tank clean.

Black Guppy Tank Mates

Black guppies are peaceful fish and get along well with other peaceful tank mates. While choosing tank mates for your black guppy, make sure to avoid aggressive fish that may bully or harass them. A few other things to consider are the size of the fish and whether or not they are compatible with the black guppy in terms of water conditions and diet.

Some good tank mates for black guppies include:

  • Neon Tetras
  • Platies
  • Mollies
  • Swordtails
  • Endlers
  • Corydoras catfish
  • Bristlenose Pleco
  • Weather loaches
  • Snails (mystery, nerite, Ramshorn)
  • Shrimps ( Cherry, Amano, Crystal Red)
  • Kuhli loaches
  • African Dwarf Frog

It is always a good idea to do a little research before adding new fish to your tank. You can also ask your local fish store for advice.

Some fish that should be avoided as tank mates for black guppies include:

  • Bettas
  • Barbs
  • Gouramis
  • Angelfish
  • Endler’s Livebearers
  • Cichlids

If guppies are kept with aggressive tank mates, they will become stressed and may not live long. Stress can also cause guppies to develop diseases. Guppies dislike aggressive fish and predatory fish that nip fins. So, it is best to avoid these kinds of fish when choosing tank mates for your black guppy.

Black Guppy

Black Guppy Tank Setup

Black Guppies are one of the most popular aquarium fish because they don't have any specific requirements. In order to avoid harassment, a community aquarium with at least 2 females should be kept for each male. Plants in the tank act as a hiding place for female guppies, who are often chased by males. In order to set up an ideal black guppy tank, you should consider the following:

Tank Size: 

A minimum tank size of 5 gallons is recommended for a single pair of Guppies. If you plan to keep more fish, you will need a larger tank.

Water Parameters: 

Guppies prefer water with a temperature in the range of 72 – 82 Degrees Fahrenheit and a pH between 6.8 and 7.5. They are not fussy eaters and will accept most types of aquarium foods.

Aquarium Lid/Cover: 

They are also brave jumpers, so only keep them in an aquarium with a lid/hood/canopy or at least a significantly lowered water level.


They won't eat or bother your plants. So, you can keep live plants in your aquarium. In fact, they love hiding in the plants and it makes them feel more secure.

Some good plant options for a black guppy tank are:

  • Java Fern
  • Anubias
  • Hornwort
  • Sword Plants
  • Wisteria
  • Water Sprite


It is always a good idea to have a filter in your aquarium. A filter will help to keep the water clean and provide a healthy environment for your fish. If there are fry in the aquarium, a sponge filter is a good option because it will not suck up the fry.


Guppies do not need special lighting, but they do prefer dim lighting. So, you can use a fluorescent light or an LED light for your aquarium.


You can use any type of aquarium substrate in a black guppy tank, but gravel is a good option because it is easy to clean.


Guppies prefer water that is between 72 and 82 degrees Fahrenheit. So, you will need a heater in your aquarium if the room temperature is below this range.

If you have all the necessary equipment, you can setup a black guppy tank in no time. Just make sure to do your research and take your time so that your fish can have a happy and healthy home.

Black Guppy Breeding 

Not only is this fish easy to breed, but it can be difficult to stop them from breeding! The females are almost always pregnant and can retain sperm for up to six months. Every four to six weeks, she will give birth to 40 to 60 fry.

The best way to get plenty of healthy, strong fry is by setting up a breeding tank. For setting up a breeding tank, you need the following:

  • You will need a 10-gallon tank for breeding Guppies. The tank should have a tight-fitting lid to prevent the fry from jumping out.
  • Breeding tank should have plenty of plants for fry to hide in, such as Java Fern or Java Moss.
  • You don't need a filter for the breeding tank, but you can use an air stone to provide oxygenation. The water temperature in the breeding tank should be between 76 and 82 degrees Fahrenheit.

Steps for setting up the breeding tank:

  • Start by adding 2 inches of gravel to the bottom of the tank.
  • Rinse the gravel with water to remove any dust.
  • Add a handful of plants to the tank.
  • Fill the tank with water and add a heater to maintain the temperature between 76 and 82 degrees Fahrenheit.
  • Let the tank cycle for 2 weeks before adding any fish.

Once the tank is set up, you can add a pair of black guppies to the tank. The female will be pregnant when you add her to the tank and will give birth to fry within 2 weeks.

Black Guppy

Black Guppy Fry

The fry (baby fish) is very delicate and requires extra care. They can be fed either baby brine shrimp or microworms. A few guppy fry usually survive in a planted community tank. However, if you want to save more of them, consider using a separate "growing on" tank. A 10-gallon tank would do just fine. Use an air powered sponge filter to avoid any fry getting sucked in. You can feed them a variety of things such as:

  • Baby brine shrimp
  • Microworms
  • Guppy pellets
  • Crushed Flake Food
  • Frozen Cyclops
  • Live Or Frozen Daphnia

Keep these tanks clean, as juvenile fish are more susceptible to pollutants than adult fish, so a daily water change and the removal of feces or dead fry will be required.

How Often Should You Feed Guppy Babies? 

When it comes to feeding guppy babies, providing smaller portions more frequently is preferable to a single large meal once a day. Guppy babies need to eat constantly for the best growth.

Feeding them 4 to 5 times a day is often recommended. As they grow, you can reduce feeding frequency to 2 or 3 times a day. Once the fry is about 1/2 inch long, they can be fed the same food as adults.

How Much Should You Feed Guppy Babies? 

Feed your guppies for 5 minutes, as much as they will eat. A tiny pinch would be a good starting amount, and you may gradually increase it as they grow. As a general guide, you should remove any uneaten food after 5 minutes to avoid polluting the tank water.

Black Guppy Diseases 

Black guppies, like all species of fish, are vulnerable to illnesses. The most common diseases that affect black guppies are:

Ich (white spot disease) (H3): This is a parasite that attacks the fish's skin, fins, and gills. The symptoms include white spots on the body, increased scratching, and lethargy.

Fin rot (H3): Guppy rot is caused by a bacterial infection. The symptoms include red or white patches on the skin, fins, and tail. The fish may also become lethargic and have trouble swimming.

Dropsy (H3): Dropsy is a condition that causes the fish's abdomen to swell. The symptoms include raised scales, bloating, and listlessness.

If you notice any of these symptoms in your black guppy, you should take them to a veterinarian who can prescribe medication.

Preventing Disease in Black Guppies 

The best way to prevent disease is to maintain a clean and healthy environment for your fish. This means doing regular water changes, keeping the tank clean, and providing the fish with a nutritious diet. You should also quarantine new fish before adding them to the tank.


Are Black Guppies Rare? 

No, black guppies are not rare. They are actually one of the most common types of guppy.

Are Black Guppies Female? 

No, black guppies can be either male or female. The males tend to be small in size, while the females are usually larger.

Do Black Guppies Need a Filter? 

Yes, all guppies need a filter. A good rule of thumb is to choose a filter that is rated for twice the size of your tank.

My Black Guppy is Acting Strange, What Should I Do?

If your black guppy is acting strange, the best thing to do is to take them to a veterinarian. They will closely monitor the fish and may be able to prescribe medication if necessary.

How to Tell if Your Black Guppy is Sick? 

The best way to tell if your black guppy is sick is to look for changes in behavior or appearance. If the fish is listless, has lost its appetite, or if there are any changes in the color of its skin, fins, or tail, then it may be sick.

How Do I Know if My Black Guppy is a Male or Female? 

The easiest way to tell the difference between a male and female black guppy is by looking at their tails. Male guppies have long, slender tails, while female guppies have shorter, rounder tails. You can also look at the size of the fish. Males are usually smaller than females.

Are Black Guppies Easy to Care For? 

Yes, black guppies are easy to care for. They are hardy fish that can tolerate a wide range of water conditions. As long as you provide them with a clean and spacious tank, they will thrive.

Do Black Guppies Need Live Plants? 

Yes, It is always better to have live plants in your tank. Not only do they look nicer, but they also provide hiding places and oxygenate the water. Guppies won't eat most live plants, so you don't have to worry about them being eaten. Artificial plants are also an option.

Can I Put Black Guppies with Other Fish? 

Yes, black guppies can be kept with other fish. They are peaceful fish that get along well with most other species. Just make sure the other fish are not too large, as they may eat the guppies. Other aggressive fish should also be avoided.

When Do Black Guppies Give Birth? 

Female black guppies will give birth every 4-6 weeks. The fry (baby fish) will be born alive and should be able to fend for themselves. It is important to have a separate tank for the fry, as they can be eaten by their parents or other fish.

What Do Black Guppies Eat? 

In the wild, black guppies eat a variety of foods including insects, crustaceans, and plant matter. In captivity, they can be fed a diet of flakes, pellets, or live food. It is important to provide them with a balanced diet that contains all the nutrients they need to stay healthy.

What is the Lifespan of a Black Guppy? 

The lifespan of a black guppy is 2-3 years. However, if they are well cared for, they can live up to 5 years.

Do Black Guppies Change Color? 

No, black guppies will not change color. The only time their color may change is when they are stressed or sick.

How Many Babies Can a Black Guppy Have? 

A black guppy can have anywhere from 40-60 babies at a time. The number of fry (baby fish) will depend on the size and health of the female.

What is the Best Tank Size for Black Guppies? 

The best tank size for black guppies is at least 10 gallons. They should have plenty of room to swim and hide. A larger tank is always better.

How Many Black Guppies Should Be Kept Together? 

The number of black guppies that should be kept together will depend on the size of your tank. A good rule of thumb is to have 1 gallon of water for each fish. So, if you have a 10-gallon tank, you can keep 10 black guppies together.


The black guppy is a beautiful and popular fish that is easy to care for. They make a great addition to any aquarium and are relatively easy to breed. Black guppies are also very resilient and can withstand a wide range of water conditions. However, like all fish, they are susceptible to stress and disease. It is important to watch for signs of illness and provide them with a healthy diet. When it comes to tank mates, black guppies get along well with most other fish. Just be sure to avoid aggressive fish that may try to eat them. With proper care, your black guppy will thrive and provide you with years of enjoyment.

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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