Black Moor Goldfish Care: Tank Setup, Diet, Tank Mates, Diseases & More!

If you’re looking for a unique and eye-catching addition to your aquarium, the black moor goldfish might be just what you need. These fish are known for their distinctive appearance, with their round, black bodies and protruding eyes. But before you bring a black moor home, there are a few things you need to know about their care.

Black Moor Goldfish require a large aquarium with good filtration and swimming space. They are peaceful and should be kept in groups of at least two. They feed on high-quality flakes and pellets, and their diet can be supplemented with live and frozen foods. Regular water changes and maintenance are essential for their health.

First and foremost, black moor goldfish require a spacious tank with plenty of room to swim. As a general rule, you should have at least 20 gallons of water per fish, and a filtration system that can handle the waste produced by these active swimmers. You should also avoid keeping black moors with other aggressive or fin-nipping fish, as their long fins can make them a target.

When it comes to feeding your black moor goldfish, a varied diet is key. While they will happily eat flakes or pellets, you should also supplement their diet with fresh or frozen foods like bloodworms or brine shrimp. And don’t forget to monitor their feeding habits – black moors have a tendency to overeat, which can lead to health problems down the line.

black moor goldfish

Species Summary

Black Moor Goldfish is a popular freshwater fish known for its unique appearance and docile temperament.

In this section, we will discuss the origin, lifespan, appearance, size, growth rate, behavior & temperament, and male vs. female differences of this fish.


Black Moor Goldfish is a selectively bred version of the Telescope Goldfish that originated from China.

It was first bred during the Tang Dynasty and has been a popular fish among fishkeepers ever since.


The average lifespan of a Black Moor Goldfish is 10-15 years, but with proper care, they can live up to 20 years or more.

It is essential to provide a healthy environment, a balanced diet, and regular checkups to ensure they live a long and happy life.


The Black Moor Goldfish has a distinct appearance with its round, bulging eyes and black coloration. Their body is egg-shaped and covered in small scales, and they have a double tail fin.

They can also have a white or orange coloration, depending on the breeding.


Black Moor Goldfish can grow up to 6 inches in length, but their size can vary depending on their living conditions and diet.

It is essential to provide a spacious aquarium to allow them to grow to their full potential.

Growth Rate

The growth rate of Black Moor Goldfish is relatively slow compared to other fish species. It takes about 2-3 years for them to reach their full size.

However, with proper care and a balanced diet, they can grow faster and healthier.

Behavior & Temperament

Black Moor Goldfish are peaceful and docile fish that get along with other fish species.

They are not aggressive and prefer to swim in groups. They can also be trained to recognize their owners and respond to them.

Male vs Female

It is challenging to differentiate between male and female Black Moor Goldfish.

However, during the breeding season, males tend to develop white spots on their gills and pectoral fins, while females have a rounder and fuller body shape.

Personally, I have been keeping Black Moor Goldfish for over 5 years, and they have been a joy to care for. Their unique appearance and peaceful temperament make them a great addition to any aquarium.

Tank Setup

Tank Size

When it comes to Black Moor Goldfish care, the size of the tank is crucial. I recommend a minimum of 20 gallons for one Black Moor Goldfish, with an additional 10 gallons for each additional fish.

These fish are messy and produce a lot of waste, so a larger tank will help maintain good water quality and keep your fish healthy.


Black Moor Goldfish prefer low to moderate lighting. I personally prefer to use LED lights that simulate natural daylight, as they provide a good balance of light without causing algae growth.

Avoid direct sunlight as it can cause temperature fluctuations and promote algae growth.

Filtration & Aeration

A good filtration system is essential for the health of your Black Moor Goldfish. I recommend using a filter that can handle at least twice the volume of your tank.

In addition to filtration, aeration is also important. I use an air pump and air stone to provide oxygen and keep the water moving.


Black Moor Goldfish are cold-water fish and prefer temperatures between 65-75°F.

I recommend using a heater to maintain a consistent temperature in your tank. Make sure to choose a heater that is appropriate for your tank size.


Black Moor Goldfish are bottom feeders and enjoy digging through the substrate.

I recommend using a fine sand or gravel substrate that is easy to clean. Avoid using sharp or rough substrates that can damage their delicate fins.


Decorations can provide hiding places and stimulation for your Black Moor Goldfish. I recommend using smooth and rounded decorations that won’t harm their fins.

Avoid using decorations with sharp edges or small openings that your fish can get stuck in.


black moor goldfish 3

Live plants can provide oxygen and help maintain good water quality in your tank.

I recommend using hardy plants such as Java Fern or Anubias, as they are easy to care for and won’t be eaten by your Black Moor Goldfish.

Water Quality

As a proud owner of black moor goldfish, I know how important it is to maintain the right water quality for these beautiful creatures.

Proper water quality is key to ensuring their health and longevity. Here are some essential things to keep in mind when it comes to water quality:

Water Temperature

Black moor goldfish are coldwater fish, which means they thrive in cooler water temperatures. The ideal temperature range for them is between 65°F and 72°F.

If the water is too warm, it can cause stress and even lead to illness. On the other hand, if the water is too cold, it can slow down their metabolism and affect their digestion.

That’s why it’s important to monitor the water temperature regularly and make adjustments as necessary.

Water pH

The pH level of the water is another critical factor to consider. Black moor goldfish prefer a pH range between 7.0 and 8.4. If the pH level is too low, it can make the water acidic and harm the fish’s health.

If the pH level is too high, it can make the water too alkaline and cause stress to the fish. You can use a pH test kit to check the water’s pH level and make adjustments if necessary.

Water Hardness

Water hardness refers to the amount of dissolved minerals in the water. Black moor goldfish prefer moderately hard water, with a range between 150 and 300 ppm.

If the water is too soft, it can cause stress to the fish and affect their overall health. If the water is too hard, it can lead to the formation of mineral deposits and affect the water quality.

You can use a water hardness test kit to check the water’s hardness level and make adjustments if necessary.

Water Changes

Regular water changes are essential to maintain good water quality for black moor goldfish. As a general rule, you should aim to change 20-25% of the water every week.

This helps remove any excess waste, uneaten food, and other pollutants from the water, keeping it clean and healthy for your fish.

When changing the water, make sure to use a water conditioner to remove any harmful chemicals or chlorine from the tap water.

By keeping these factors in mind and maintaining good water quality, you can help ensure that your black moor goldfish stay healthy and happy for years to come.

Tank Maintenance

As a black moor goldfish owner, I’ve learned that keeping their tank clean and well-maintained is crucial for their health and happiness.

Here are some tips for keeping your black moor goldfish’s tank in tip-top shape:

First, make sure to do partial water changes every week. I usually change about 25% of the water in my goldfish’s tank, which helps keep the water clean and clear.

It’s important to use a water conditioner to remove any harmful chemicals from the tap water before adding it to the tank.

black moor goldfish 4

In addition to water changes, it’s also important to clean the tank’s filter regularly. I clean my filter every month to prevent any buildup of debris or waste that could harm my goldfish.

Be sure to follow the manufacturer’s instructions for cleaning your specific filter.

Another important aspect of tank maintenance is monitoring the tank’s water temperature.

Black moor goldfish prefer cooler water temperatures, so it’s important to keep the water between 65-72°F.

I use a thermometer to check the water temperature regularly and adjust the heater as needed.

Finally, don’t forget to check the tank’s pH levels regularly. Black moor goldfish prefer a pH level between 7.0-7.4.

I use a pH testing kit to check the levels every week and make any necessary adjustments.

By following these simple tips for tank maintenance, you can ensure that your black moor goldfish stays healthy and happy in their home.

Tank Mates

When it comes to keeping black moor goldfish, choosing the right tank mates is essential. Here are some tips to help you make the best choices:

Compatible Fish Species

Black moor goldfish are social creatures and can coexist peacefully with other cold-water fish species.

Some good tank mates for black moors include:

  • Fancy Goldfish
  • Common Goldfish
  • Koi
  • White Cloud Mountain Minnows

These fish species are all hardy and can tolerate the same water conditions as black moors.

They also have similar dietary requirements, which makes feeding them easier.

Incompatible Fish Species

While black moor goldfish can get along with many fish species, there are some that should be avoided.

Some fish species that are not compatible with black moors include:

Neon Tetras Care Guide pet people blog 2
  • Tetras
  • Barbs
  • Guppies
  • Angelfish

These fish species require warmer water temperatures and different water parameters, which can stress out black moors and make them more susceptible to disease.

How Many Black Moor Goldfish Can I Have?

When it comes to stocking your aquarium, a good rule of thumb is to have no more than one inch of fish per gallon of water.

Black moor goldfish can grow up to six inches in length, so a 20-gallon tank can comfortably hold two to three black moors.

Personal Anecdote: I made the mistake of adding tetras to my black moor goldfish tank once, and it didn’t end well. The tetras were too small and agile for my black moors, and they ended up nipping at their fins and stressing them out. I learned my lesson and now stick to compatible fish species.


Feeding your black moor goldfish is an important part of their care. As an owner, I have learned a lot about what to feed, how often, and tips to ensure my fish stay healthy and happy.

What To Feed

Black moor goldfish are omnivores, which means they eat both plant and animal matter. A balanced diet should include a variety of foods to meet their nutritional needs. I feed my black moor goldfish a combination of:

  • Pellets or flakes specifically made for goldfish
  • Frozen or live brine shrimp or bloodworms
  • Fresh vegetables like peas, zucchini, or lettuce


It’s important to feed your black moor goldfish the appropriate amount of food, as overfeeding can lead to health problems.

I feed my fish twice a day, once in the morning and once in the evening. Each feeding consists of only a small amount of food that they can consume in a few minutes.


Here are some tips to keep in mind when feeding your black moor goldfish:

  • Remove any uneaten food after a few minutes to prevent it from polluting the water
  • Offer a variety of foods to prevent boredom and ensure a balanced diet
  • Avoid overfeeding, as this can lead to obesity and other health issues
  • Consider using a feeding ring to prevent food from floating away and to help monitor how much your fish are eating

By following these tips and providing a balanced diet, you can help ensure your black moor goldfish stay healthy and happy.

black moor goldfish 4

Common Diseases


As an owner of black moor goldfish, I have experienced various health problems with my fish.

Some of the most common diseases that can affect black moor goldfish include swim bladder disease, dropsy, and ich.

Swim bladder disease is a condition where the fish is unable to maintain its buoyancy and may float upside down or sink to the bottom of the tank.

Dropsy is a bacterial infection that causes the fish to swell and develop raised scales.

Ich, on the other hand, is a parasitic infection that causes white spots to appear on the fish’s body.


It is important to monitor your black moor goldfish for any signs of illness.

Symptoms of swim bladder disease include difficulty swimming, floating, or sinking. Dropsy symptoms include swollen body, raised scales, and bulging eyes.

Ich symptoms include white spots on the fish’s body, flashing, and scratching against objects in the tank.


If you notice any symptoms of illness, it is important to take action immediately.

Treatment for swim bladder disease includes feeding the fish a diet of peas or medicated fish food.

Dropsy can be treated with antibiotics or by isolating the sick fish in a separate tank. Ich can be treated with medication, increasing the temperature of the tank, and adding salt to the water.


Prevention is key when it comes to keeping your black moor goldfish healthy. Ensure that the tank is properly maintained with clean water, appropriate temperature, and adequate oxygen levels.

Avoid overfeeding your fish and be sure to quarantine any new fish before introducing them to the tank.

Regularly inspect your fish for any signs of illness and address any issues immediately. Personal

Personal Anecdote: I once noticed that one of my black moor goldfish had developed raised scales and was swimming erratically. After doing some research, I discovered that it had dropsy. I immediately isolated the fish in a separate tank and treated it with antibiotics. Thankfully, the fish made a full recovery and is now back to swimming happily with its tank mates.

Signs of a Healthy Black Moor Goldfish

I have been taking care of black moor goldfish for a few years now, and I have learned a lot about their health and wellbeing. Here are some signs that your black moor goldfish is healthy:

  1. Bright and Clear Eyes: The eyes of your black moor goldfish should be bright and clear. If you notice any cloudiness or discoloration in the eyes, it could be a sign of an infection or illness.
  2. Active and Energetic: Healthy black moor goldfish are active and energetic. They should be swimming around the tank and exploring their environment. If your fish is lethargic or spending a lot of time at the bottom of the tank, it could be a sign of a health problem.
  3. Smooth and Shiny Scales: The scales of your black moor goldfish should be smooth and shiny. If you notice any bumps or discoloration on the scales, it could be a sign of a parasitic infection or other health problem.
  4. Healthy Appetite: A healthy black moor goldfish has a good appetite and is eager to eat. If your fish is not eating or is only eating a little bit, it could be a sign of a health problem.
  5. Clean and Clear Water: Finally, the water in your black moor goldfish’s tank should be clean and clear. Regular water changes and proper filtration are essential for maintaining a healthy environment for your fish.

In my experience, paying attention to these signs can help you identify potential health problems early and take action to keep your black moor goldfish healthy and happy.

Signs Your Black Moor Goldfish is Sick

As a proud owner of a black moor goldfish, I know how important it is to keep an eye on their health. Here are some signs to look out for that may indicate your fish is sick:

  1. Change in appetite: If your fish is suddenly not eating or eating less than usual, it could be a sign of illness.
  2. Abnormal swimming: If your fish is swimming erratically or struggling to swim, it could be a sign of swim bladder disease or another health issue.
  3. Cloudy eyes: If your fish’s eyes appear cloudy or milky, it could be a sign of an eye infection or other health issue.
  4. Gasping for air: If your fish is gasping for air at the surface of the water, it could be a sign of poor water quality or a respiratory issue.
  5. Abnormal growths: If you notice any unusual growths or bumps on your fish, it could be a sign of a tumor or other health issue.

If you notice any of these signs, it’s important to take action quickly to treat your fish and prevent the spread of illness to other fish in your tank.

It’s always a good idea to consult with a veterinarian who specializes in fish health to get a proper diagnosis and treatment plan.

Remember, keeping your black moor goldfish healthy requires regular tank maintenance, a balanced diet, and a watchful eye for any signs of illness. With proper care, your fish can live a long and happy life!


Breeding Setup

Before breeding your black moor goldfish, you need to set up the perfect breeding environment.

I recommend using a separate breeding tank that is at least 20 gallons in size. You should also invest in a breeding net to protect the eggs from being eaten by the adult fish.

Make sure the water temperature is around 75°F and the pH level is between 7.0 and 7.4.

You should also provide hiding places for the fish, such as plants or rocks. This will give the fry a place to hide once they hatch.

How To Breed

Once you have set up the breeding tank, you can introduce the male and female black moor goldfish.

You will notice that the male will chase the female around the tank and nudge her belly. This is a sign that they are ready to mate.

After mating, the female will lay eggs on the plants or rocks in the tank.

You should remove the adult fish from the breeding tank once the eggs have been laid to prevent them from eating the eggs.


After the eggs have been laid, it is important to monitor the tank closely. The eggs will hatch in about 3-5 days, and the fry will need to be fed small amounts of food several times a day.

I recommend using commercial fry food or freshly hatched brine shrimp.

It is also important to keep the water clean and well-aerated. You should change about 20% of the water every other day to prevent ammonia build-up and maintain good water quality.

When the fry reach about 1 inch in length, you can move them to a separate tank. Make sure the tank is well-cycled and has plenty of hiding places for the young fish.

Overall, breeding black moor goldfish can be a rewarding experience. Just make sure you have the right setup and are prepared to provide the necessary care for the fry.

Personally, I have bred black moor goldfish before and it was an amazing experience. Seeing the tiny fry hatch and grow into full-size fish was truly rewarding. Just make sure to do your research and be prepared for the responsibility of caring for the young fish.

Product recommendations for Black Moor Goldfish:

  1. Hikari Oranda Goldfish Pellets – This is a high-quality fish food that is perfect for Black Moor Goldfish. It contains all the essential nutrients that your fish need to stay healthy and vibrant.
  2. Marina LED Aquarium Kit – This is a great aquarium kit that is perfect for Black Moor Goldfish. It comes with everything you need to get started, including a filter, heater, and LED lighting.
  3. API Aquarium Water Test Kit – It is important to keep an eye on the water quality in your aquarium, and this test kit makes it easy to do so. It includes tests for ammonia, nitrite, nitrate, and pH.
  4. Seachem Prime – This is a water conditioner that helps to detoxify ammonia, nitrite, and nitrate in your aquarium. It is safe for use with Black Moor Goldfish and other fish.
  5. Fluval Plant and Shrimp Stratum – If you plan on keeping live plants in your aquarium, this substrate is a great choice. It provides the nutrients that plants need to thrive, and also helps to maintain a stable pH.
  6. AquaClear Power Filter– This filter is highly effective at removing debris and maintaining water quality in your aquarium. It is also very quiet and easy to maintain.
  7. Aqueon Aquarium Water Changer – This device makes it easy to perform regular water changes in your aquarium. It is designed to be safe and easy to use, and can help to keep your Black Moor Goldfish healthy.
  8. Zoo Med Nano 10 External Canister Filter – This is a small and efficient filter that is perfect for smaller aquariums housing Black Moor Goldfish. It is easy to install and maintain, and will keep the water in your aquarium clean and healthy.
  9. NICREW ClassicLED Aquarium Light – This LED light is perfect for illuminating your aquarium and showcasing your Black Moor Goldfish. It is energy-efficient and easy to install.


After researching and caring for black moor goldfish for several years, I can confidently say that they are one of the most rewarding fish to keep. Watching them grow and thrive in their aquarium is truly a satisfying experience.

Remember to keep their water clean and well-aerated, feed them a balanced diet, and provide them with plenty of space to swim around. Additionally, be mindful of their unique physical characteristics, such as their delicate eyes and tendency to produce excess waste.

By following these simple guidelines, you can ensure that your black moor goldfish will live a long and healthy life. If you’re considering adding a black moor to your aquarium, I highly recommend it. They are a joy to watch and care for.

Personally, my black moor goldfish, named Bubbles, has brought me so much joy and companionship over the years. I love watching him swim around and interact with his tank mates. Taking care of him has become a hobby that I truly enjoy.

In conclusion, black moor goldfish care requires some effort and attention, but the rewards are well worth it. If you’re up for the challenge, I encourage you to give it a try. You won’t be disappointed!


As an experienced black moor goldfish owner, I have received many questions about their care. Here are some of the most common ones:

Q: How often should I feed my black moor goldfish?

A: It is recommended to feed your black moor goldfish small amounts of food multiple times a day, rather than one large feeding. I usually feed my goldfish 2-3 times a day, and make sure to only give them as much food as they can eat in 2-3 minutes.

Q: What kind of food should I give my black moor goldfish?

A: Black moor goldfish are omnivores, so they can eat both plant and animal-based foods. I recommend a balanced diet of high-quality pellets or flakes, supplemented with fresh or frozen vegetables like peas, spinach, or zucchini. Avoid overfeeding your goldfish, as this can lead to health problems like swim bladder disease.

Q: How often should I clean my black moor goldfish’s tank?

A: It is important to maintain good water quality in your goldfish’s tank by doing partial water changes every 1-2 weeks. I usually change about 25% of the water each time, and make sure to vacuum the gravel to remove any debris or waste. You should also clean the filter regularly to keep it functioning properly.

Q: Can black moor goldfish live with other fish?

A: Yes, black moor goldfish can live with other peaceful, slow-moving fish that are similar in size. However, they should not be kept with aggressive or fast-swimming fish that may nip at their fins or outcompete them for food. I have successfully kept my black moor goldfish with other goldfish, guppies, and neon tetras.

Q: Do black moor goldfish need a heater?

A: Black moor goldfish are coldwater fish and can tolerate a wide range of temperatures. However, they should not be kept in water that is too warm, as this can cause stress and health problems. I recommend keeping the water temperature between 65-75°F (18-24°C), depending on the season and your location.

Q: Why is my black moor goldfish turning white?

A: Black moor goldfish can change color over time due to genetics, age, or environmental factors. It is not uncommon for them to lose their black coloration and turn white or gold as they age. However, sudden or drastic changes in color can be a sign of stress, illness, or poor water quality. If you notice any unusual behavior or symptoms, consult with a veterinarian or experienced fish keeper.

Overall, taking care of black moor goldfish requires patience, dedication, and a willingness to learn. By following these tips and answering these FAQs, you can provide a happy and healthy home for your beloved fish.

Reference: Wikipedia.


Hi there! My name is Jacob, and I'm the founder of this Pet people blog that talks all about aquarium and fishkeeping. I've been passionate about fish and aquatic life since I was a kid, and I've spent countless hours learning about different species, their habitats, and how to create the perfect environment for them to thrive in.

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