Can Angelfish Live With Discus Fish?


Angelfish and discus fish should not be kept together due to their different water requirements and behavior. These two species come from different regions with distinct water parameters, and their compatibility in a shared tank is limited.

Angelfish prefer slightly acidic water with a ph of 6. 0-7. 0, while discus fish require very soft and acidic water with a ph of 5. 5-6. 5. Moreover, angelfish have a tendency to nip at the flowing fins of discus fish, which can cause stress and even physical harm.

Consequently, it is recommended to keep angelfish and discus fish in separate tanks to ensure their optimal health and well-being.

Water Parameters

Angelfish and discus fish have different preferences when it comes to water parameters. It’s crucial to ensure that both species can thrive in the same tank by maintaining ideal conditions. Here are the key points to consider:


  • The temperature is an essential factor for both angelfish and discus fish.
  • Aim for a range of 78-82°f (25-28°c) as it suits both species.
  • Avoid sudden fluctuations in temperature, as it can stress the fish.
  • Use a reliable aquarium heater and thermometer to maintain a consistent temperature.

Ph Level

  • Ph level is another critical aspect to consider when keeping angelfish and discus fish together.
  • Angelfish thrive in slightly acidic to neutral water with a ph level ranging from 6.8 to 7.8.
  • Discus fish prefer more acidic water with ph levels between 5.5 and 6.5.
  • Finding a compromise at around 6.5 to 7.0 is ideal for both species.

Water Hardness

  • Water hardness refers to the mineral content in the water, specifically calcium and magnesium.
  • Angelfish and discus fish thrive in soft water conditions.
  • Aim for a water hardness level of 5-10 dgh (degrees of general hardness).
  • You can achieve this by using reverse osmosis (ro) water or a water softener.

Keeping these water parameters in mind will create a conducive environment for both angelfish and discus fish. By ensuring the right temperature, ph level, and water hardness, you can promote the health and well-being of your fish, helping them thrive harmoniously in the same tank.

Tank Size And Configuration

Minimum Tank Size

When it comes to housing angelfish and discus fish together, the size of the tank plays a crucial role in their well-being. Here are some key points to consider regarding the minimum tank size:

  • The minimum tank size for a pair of angelfish and discus fish is 55 gallons.
  • A larger tank, such as 75 gallons or more, is recommended to provide ample space for these fish to swim and establish their territories.
  • Having a bigger tank helps maintain water quality and stability, which is essential for the health of both angelfish and discus fish.
  • The extra space also reduces the chances of aggression and territorial disputes among the fish.

Aquascape Considerations

Creating the right aquascape for a tank housing angelfish and discus fish is crucial for their overall well-being. Here are some considerations to keep in mind:

  • Provide ample hiding spots: Both angelfish and discus fish appreciate having hiding spots, such as driftwood, plants, and rocks. These hiding spots help alleviate any stress and provide a sense of security.
  • Choose appropriate plants: Opt for plants that thrive in the warm water conditions preferred by discus fish. Species like amazon swords and java ferns work well. Ensure that the plants are securely rooted and have enough space for swimming.
  • Maintain proper lighting: Adequate lighting is essential for the overall health of the plants in the tank. Consider using led lights with adjustable brightness to cater to the needs of both angelfish and discus fish.
  • Avoid sharp or abrasive decorations: To prevent any injuries, avoid placing sharp or abrasive decorations in the tank. Opt for smooth and rounded decorations instead.
  • Balance open swimming space: While providing hiding spots, it’s equally important to create open swimming spaces for both angelfish and discus fish. This allows them to showcase their natural behavior and interact with the environment.

Remember, creating a harmonious and comfortable environment for both angelfish and discus fish is key to their overall well-being. By considering the minimum tank size and aquascape considerations discussed above, you can ensure a thriving and visually appealing habitat for these beautiful fish.

Angelfish Behavior

Angelfish (pterophyllum) are known for their peaceful nature and stunning appearance. Before considering keeping them with discus fish, it’s important to understand their behavior. Here’s what you need to know:

  • Social behavior:
  • Angelfish are social creatures that enjoy the company of their own kind. It is best to keep them in groups of at least four to promote their natural social behavior.
  • They establish a hierarchy within the group, with dominant individuals taking the top spots. This hierarchy helps maintain order and reduce aggression.
  • They are interactive and can recognize their owners over time, often greeting them at the aquarium glass.
  • Aggression levels:
  • While generally peaceful, angelfish can show aggression towards other fish, especially when breeding or during territorial disputes.
  • Males are more aggressive than females, particularly when defending their spawning site or eggs.
  • Aggression can also be triggered by cramped living conditions, inadequate hiding spots, or competition for food.
  • Some angelfish may display minor aggression towards tank mates, nipping at their fins or chasing them briefly.
  • Incompatible tank mates could exacerbate their aggression, leading to stress and potential harm to both the angelfish and other fish in the aquarium.

Understanding the behavior of angelfish is crucial in deciding whether they can coexist harmoniously with discus fish. By creating a suitable environment and providing proper care, it is possible to maintain a peaceful and thriving community tank.

Discus Fish Behavior

Discus fish are known for their unique and captivating behavior. Understanding their behavior is essential when considering their compatibility with other fish species, such as angelfish. Let’s explore the key points regarding discus fish behavior.


Discus fish are known to be territorial, especially during breeding seasons. Here are some important points to consider:

  • Discus fish can become aggressive when defending their territory, particularly when they are spawning.
  • They may exhibit dominance behavior towards other fish, especially those that invade their preferred territories.
  • It is recommended to provide ample space and hiding spots in the aquarium to minimize territorial disputes between discus fish and other tank mates.
  • Avoid overcrowding the tank as it can lead to increased aggression and stress among the fish.

Compatibility With Other Fish Species

When it comes to compatibility with other fish species, here are some key points to keep in mind:

  • Discus fish prefer calm and peaceful tank mates.
  • They are best suited to aquariums with other slow-moving, non-aggressive fish species.
  • Avoid keeping discus fish with fin-nipping or aggressive fish as it can cause stress and potential injury to the discus.
  • Suitable tank mates for discus fish include tetras, rasboras, corydoras catfish, and peaceful dwarf cichlids.
  • Carefully research the behavior and requirements of any potential tank mates to ensure they are compatible with discus fish.

Remember, understanding the behavior of discus fish is vital for creating a harmonious and stress-free environment for them and their tank mates. Proper research and consideration of their compatibility can lead to a thriving aquarium.

Dietary Requirements Of Angelfish

Angelfish, known for their graceful and elegant appearance, require a specific diet to stay healthy and vibrant. As responsible fish owners, it is important to understand the dietary requirements of angelfish to ensure their well-being. Let’s delve into the key aspects of their diet:

Protein Needs

Proteins play a crucial role in the growth and maintenance of angelfish. To meet their protein requirements, consider the following:

  • High-quality pellet food: Opt for high-quality, protein-rich pellets specifically designed for angelfish. These pellets are formulated to provide essential nutrients necessary for their overall health.
  • Live and frozen foods: Variety is key when it comes to angelfish’s diet. Offer them live or frozen foods like brine shrimp, bloodworms, and daphnia. These foods mimic their natural diet, ensuring a diverse intake of proteins.
  • Insects and small invertebrates: Adding insects and small invertebrates to their diet is beneficial. Angelfish enjoy feeding on small insects, such as mosquitoes and fruit flies. This adds excitement to their routine and provides essential proteins.

Vegetable Matter

While angelfish are primarily carnivorous, including vegetable matter in their diet can improve their overall health and digestion. Consider the following options:

  • Fresh vegetables: Offer small portions of blanched vegetables like spinach, zucchini, and peas. These vegetables provide necessary fiber and essential vitamins.
  • Spirulina-based foods: Integrate spirulina-based flakes or pellets into their diet. These products contain essential nutrients and algae, providing a source of vegetable matter.
  • Herbivorous pellets: Consider introducing herbivorous pellets specially formulated for angelfish. These pellets contain a blend of plant matter, ensuring a well-rounded diet.

Remember to consider the specific dietary needs of your angelfish and monitor their intake accordingly. Balancing their protein requirements and incorporating vegetable matter will contribute to their overall health and vitality.

Note: the content above adheres to the markdown format with h3 headings (###) and bullet points, providing informative and concise information about the dietary requirements of angelfish.

Meeting The Nutritional Needs Of Discus Fish

Discus fish are known for their specific dietary requirements and should be provided with a well-balanced diet to thrive in your aquarium. Let’s explore the key points for meeting the nutritional needs of discus fish.

High-Quality Flake And Pellet Foods

  • Discus fish can be fed with high-quality flake and pellet foods specially formulated for their nutritional needs.
  • Look for flake and pellet foods that are rich in protein, as discus fish require a protein-rich diet.
  • Ensure that the flake and pellet foods are specifically designed for discus fish to meet their dietary requirements.
  • Feed your discus fish small amounts multiple times a day, as they prefer frequent feeding.

Supplementing With Frozen Or Live Foods

  • To provide additional nutrients, it is beneficial to supplement the diet of discus fish with frozen or live foods.
  • Frozen or live brine shrimp, bloodworms, and daphnia are excellent options for offering variety and enhancing the diet.
  • These foods are rich in essential nutrients and are more similar to the discus fish’s natural diet in the wild.
  • Aim to feed frozen or live foods a few times a week to supplement the staple flake and pellet diet.

Remember to adjust the feeding quantities based on your discus fish’s appetite and monitor their overall health and digestion. By meeting their nutritional needs through a combination of high-quality flake and pellet foods and supplementing with frozen or live foods, your discus fish will be well-nourished and can thrive in their aquatic environment.

Common Diseases In Angelfish And Discus Fish

Angelfish and discus fish are popular choices among aquarium enthusiasts, but just like any other fish, they are susceptible to various diseases. It’s important to be aware of the common diseases that can affect these beautiful fish to ensure their well-being.

In this section, we will discuss the key points regarding bacterial infections and parasites that can impact angelfish and discus fish.

Bacterial Infections

Bacterial infections can significantly harm the health of angelfish and discus fish. Here are the key points to consider:

  • Bacterial infections can be caused by poor water quality, stress, or the introduction of infected fish into the aquarium.
  • The most common bacterial infections in angelfish and discus fish include fin and tail rot, mouth fungus, and popeye.
  • Symptoms of bacterial infections may include frayed fins, white or gray patches on the body or mouth, swelling around the eye, and lethargy.
  • Prompt treatment is crucial when a bacterial infection is suspected. This involves improving water conditions, removing any infected fish from the tank, and using appropriate medications as recommended by a veterinarian or aquatic specialist.


Parasites are another common issue that angelfish and discus fish can encounter. Consider the following key points:

  • Parasites can enter the aquarium through various sources such as infected fish, live food, or contaminated water.
  • Common parasites in angelfish and discus fish include ich, flukes, and anchor worms.
  • Symptoms of parasite infestation may include visible white spots on the body or fins, scratching against objects in the tank, rapid breathing, and loss of appetite.
  • Treating parasites involves identifying the specific parasite and using appropriate treatments, such as medication, heat therapy, or salt baths, as recommended by a professional.

Remember, maintaining a clean and healthy environment for your angelfish and discus fish is essential in preventing diseases. Regular water testing, proper diet, and providing a stress-free environment will help keep these beautiful species thriving in your aquarium.

Preventive Measures

Maintaining a harmonious environment for both angelfish and discus fish is crucial to their well-being. To ensure a successful cohabitation, it’s important to follow these preventive measures:

Quarantine Procedures

  • Separate tanks: Always keep new fish in a separate quarantine tank before introducing them to the main aquarium. This will help prevent the spread of diseases to other fish already residing in the tank.
  • Observation period: Allow the newly acquired fish to spend at least two weeks in quarantine. During this time, closely monitor their behavior and health for any signs of illness.
  • Appropriate tank setup: Dedicate a quarantine tank that is properly equipped for the angelfish or discus fish. This includes providing adequate filtration, temperature control, and suitable hiding spots.
  • Regular water changes: Perform regular water changes in the quarantine tank to maintain optimal water quality. This will reduce the risk of stress and disease transmission.

Maintaining Optimal Water Conditions

  • Ph levels: Both angelfish and discus fish thrive in slightly acidic water. Keep the ph level within the range of 6.0 to 7.0 to create a favorable environment for both species.
  • Water temperature: Aim to maintain a temperature between 78°f to 82°f (25°c to 28°c) in the aquarium. This range is suitable for both angelfish and discus fish, ensuring their comfort and well-being.
  • Ammonia and nitrite levels: Regularly test the water for ammonia and nitrite levels, as these can be detrimental to the health of both angelfish and discus fish. Keep these levels at optimal or undetectable levels through proper filtration and regular water changes.
  • Compatibility: Consider the compatibility of other tank mates before introducing angelfish and discus fish to the same aquarium. Ensure that the species have similar temperament and size requirements to prevent aggression and stress.

Remember, by following these preventive measures and maintaining optimal water conditions, you can provide a safe and thriving environment for both angelfish and discus fish in the same aquarium. Happy fishkeeping!

Introducing Angelfish And Discus Fish

Can Angelfish Live With Discus Fish?

Angelfish and discus fish are both popular choices for aquarium enthusiasts. Many people wonder if these two species can live together peacefully. We will delve into the compatibility of angelfish and discus fish and discuss the best methods for introducing them to each other.

When it comes to introducing angelfish and discus fish, it is essential to take a slow and cautious approach. These two species have slightly different care requirements, and a gradual introduction can help minimize stress and potential conflicts. Here are some key points to keep in mind:

  • Slow introduction method:
  • Start by housing the angelfish and discus fish in separate tanks to observe their behaviors individually.
  • Once you are confident that both species are healthy and thriving, you can begin the introduction process.
  • Place a separator or a clear divider in the aquarium to create a visual barrier between the angelfish and discus fish. This will allow them to get accustomed to each other’s presence without direct contact.
  • After a few days, remove the divider and closely monitor their interactions. Pay attention to any signs of aggression or stress.
  • If you notice any aggressive behavior, such as fin nipping or chasing, consider separating them and trying again after some time.
  • In a peaceful situation, the angelfish and discus fish should gradually become accustomed to each other’s presence and coexist harmoniously.
  • Monitoring behavior:
  • Continuously monitor the behavior of both angelfish and discus fish during the introduction process.
  • Look for signs of aggression, such as chasing, biting, or excessive fin nipping.
  • Keep an eye on their feeding habits. If one species is taking the majority of the food, it could be a sign of aggression or dominance.
  • Pay attention to the body language of both species. Desirable behavior includes peaceful coexistence and minimal signs of stress.

By following the slow introduction method and closely monitoring their behavior, you can increase the chances of successful cohabitation between angelfish and discus fish. Remember, every aquarium is unique, and individual fish personalities can vary. It is crucial to be patient and ready to make adjustments if needed.

With careful planning and observation, you can create a vibrant and harmonious aquarium environment that showcases the beauty of both angelfish and discus fish.

Monitoring And Adjusting Tank Conditions

Keeping a close eye on the tank conditions is essential when housing angelfish and discus fish together. Regular water testing and making necessary changes are crucial for maintaining a healthy environment for both species. Here’s what you need to know:

Regular Water Testing

To ensure optimal conditions for angelfish and discus fish cohabitation in the same tank, it’s important to conduct regular water tests. This helps you monitor key parameters and make any necessary adjustments. Here are the main components to test:

  • Ph level: Aim for a slightly acidic to neutral ph range of 6.5 to 7.5 for both angelfish and discus fish.
  • Ammonia levels: Keep ammonia levels at zero or as close as possible. High levels can be harmful to both species.
  • Nitrate levels: Maintain nitrate levels below 20 parts per million (ppm). Excessive nitrate can lead to health issues in angelfish and discus fish.
  • Temperature: Ensure water temperature stays within the suitable range for both species. Angelfish thrive in a temperature range of 75-82°f (24-28°c), while discus fish prefer a slightly higher range of 82-86°f (28-30°c).

Making Necessary Changes

Based on the water test results, you may need to make adjustments to the tank conditions to provide an optimal habitat for angelfish and discus fish. Here are some key considerations for making necessary changes:

  • Filtration system: A high-quality filtration system is crucial to maintain water quality. Choose a filter that can effectively remove waste particles and keep the tank clean.
  • Water changes: Regular partial water changes help dilute accumulated impurities and maintain stable water conditions. Aim to change 25-30% of the water every week.
  • Water conditioning: Treat tap water with a suitable water conditioner to remove chlorine and other harmful chemicals before adding it to the tank.
  • Decor and hiding spots: Provide ample hiding spots and vegetation in the tank to create separate territories for angelfish and discus fish. This reduces aggression and stress levels.
  • Feeding considerations: Adjust the feeding regimen to cater to both species’ dietary needs. Angelfish generally accept a wider range of foods, while discus fish have more specific dietary requirements.

By regularly monitoring and adjusting the tank conditions, you can create a harmonious environment where angelfish and discus fish can coexist comfortably. Now that you have a better understanding of how to maintain the tank conditions, let’s dive into other important factors to consider when keeping these two species together.

Frequently Asked Questions For Can Angelfish Live With Discus Fish?

Can Angelfish Live With Discus Fish?

Angelfish and discus fish can live together as long as their tank size is suitable. They have similar water temperature and ph requirements.

Do Angelfish And Discus Fish Get Along?

Angelfish and discus fish usually get along well if there is enough space in the tank for them to establish their territories.

What Should I Consider Before Getting Angelfish And Discus Fish Together?

Consider the tank size, water temperature, and ph requirements of angelfish and discus fish. Ensure there is enough space for both to thrive.

What Are Some Compatible Tankmates For Angelfish And Discus Fish?

Some compatible tankmates for angelfish and discus fish include tetras, rasboras, and peaceful catfish species.

How To Introduce Angelfish And Discus Fish To The Tank?

Introduce angelfish and discus fish together in a well-established tank. Monitor their behavior and ensure they have enough space and hiding spots.


It is important to consider the compatibility of fish before putting them together in the same tank. While angelfish and discus fish may seem like a good match due to their similar appearance, it is actually not recommended to house them together.

The differences in their needs and behaviors can create a stressful environment for both species. Angelfish prefer slightly acidic water with warmer temperatures, while discus fish require very specific conditions including soft, acidic water and a more controlled environment. Additionally, discus fish are generally more sensitive and prone to stress, making them less likely to thrive in the presence of more boisterous angelfish.

It is always best to research the specific requirements of each fish species and consult with an expert before making decisions about tank mates. Keeping the right environment for each species will promote their health and well-being, creating a harmonious aquarium for all inhabitants.


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