Electric Blue Jack Dempsey Care: Feeding, Tank Size, And Breeding

The electric blue jack dempsey requires a tank size of at least 75 gallons and a varied diet for proper care and feeding. Breeding can be difficult due to their aggressive nature.

The electric blue jack dempsey, also known as the blue dempsey, is a stunning and popular freshwater fish species with a vibrant blue hue. These fish require specific care and attention, including a tank size of at least 75 gallons to accommodate their active nature and aggressive tendencies. Feeding should consist of a varied diet, including small live or frozen foods, to promote optimal health. Breeding can be challenging due to the aggression of the males, and fry may require special care. Providing proper care and attention can ensure a healthy, happy life for these beautiful fish.

Tank Size And Setup

Electric blue jack dempseys are one of the most sought-after fish among aquarium enthusiasts. Their vibrant appearance and fascinating behavior make them a popular choice to keep as pets. However, taking care of these fish requires effort and attention to detail to ensure they thrive in their environment.

One of the essential aspects of keeping electric blue jack dempseys is providing them with the appropriate tank size, set up, and adequate filtration. In this section, we’ll discuss everything you need to know about tank size and setup for an electric blue jack dempsey.

Ideal Tank Size For An Electric Blue Jack Dempsey

When it comes to size, the bigger, the better. Electric blue jack dempseys require a spacious tank to swim around, explore, and establish territories. A larger tank will also provide more water volume, diluting waste, and providing a more stable environment.

As a rule of thumb, a single electric blue jack dempsey requires at least a 55-gallon tank. However, considering the size of these fish, we recommend a minimum of 75-gallons for a solitary fish. If you plan on keeping multiple electric blue jack dempseys, increase the tank size by at least 25-gallons per fish.

Proper Filtration And Water Parameters

Electric blue jack dempseys thrive in a clean and well-maintained aquarium. Quality filtration is crucial in maintaining a healthy environment for these fish. We recommend using a power filter that can process a minimum of 10 times the tank volume per hour.

Additionally, performing regular water changes of 10-20% every week or bi-weekly will maintain water quality. Besides, electric blue jack dempseys prefer a slightly acidic to neutral ph (6. 5-7. 5) and temperature range of 77-82°f. Use a reliable heater and thermometer to ensure your aquarium’s water parameters remain consistent over time.

Decorating The Tank For The Fish’S Comfort

Decorating the tank is essential for the comfort and well-being of electric blue jack dempseys. Provide hiding places for your fish, such as caves, rock formations, and driftwood. Also, create an open space for your fish to swim around comfortably, which will help mitigate aggressive behavior.

We recommend using sand or small gravel as substrate, as these fish love to dig and burrow. To create a stunning visual effect, consider adding some live plants, such as amazon swords, java ferns, and anubias, as long as the plants can tolerate the fish’s higher temperatures.

By providing the right tank size, set up, and decoration, you can create a beautiful and healthy environment for your electric blue jack dempsey to thrive. Give your fish the care they deserve, and they will reward you with their beauty and engaging behavior.


Electric blue jack dempsey is one of the most sought-after species among aquarium enthusiasts. Not only is it an excellent addition to your aquarium, but it also requires less maintenance as compared to other fishes. Plays a crucial role in maintaining the health and vitality of your electric blue jack dempsey.

In this section, we will discuss the dietary requirements of electric blue jack dempsey, the best types of food to feed, and the proper feeding schedule to maintain their overall health.

Dietary Requirements Of Electric Blue Jack Dempsey

To keep your electric blue jack dempsey healthy, you must know their dietary requirements. This fish is omnivorous, which means they prefer both plant and meat-based food.

  • High-quality proteins
  • Essential fatty acids
  • Vitamins
  • Minerals

Best Types Of Food To Feed The Fish

Feeding your electric blue jack dempsey with a variety of food is essential for their health.

  • Frozen foods: bloodworms, brine shrimp, and daphnia are excellent sources of protein and help maintain the fish’s health greatly.
  • Pellets and flakes: you can feed your electric blue jack dempsey high-quality pellets and flakes which contain essential nutrients such as vitamins and minerals.
  • Vegetables: with vegetable-based food, you can easily meet the plant-based dietary requirements of your fish. You can incorporate foods like lettuce, spinach, and peas.
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Proper Feeding Schedule

Maintaining a proper feeding schedule is one of the critical things to keep your electric blue jack dempsey healthy. Overfeeding can lead to health issues like bloating and constipation, and can even reduce the quality of water in the aquarium.

  • Feed your electric blue jack dempsey twice a day, spreading the feedings out.
  • Make sure your fish can complete the food within 2-3 minutes, and do not leave any food in the aquarium.

Keeping your electric blue jack dempsey healthy is not complicated. By following a proper feeding schedule and providing a variety of food, you can maintain their overall health, keep them happy and colorful, and enjoy their beauty for years to come.

Maintenance And Health

Electric blue jack dempsey is a beautiful and fascinating fish that captures the hearts of many fish enthusiasts. However, taking care of them requires a lot of attention, especially when it comes to their health and maintenance. In this article, we will discuss how to maintain electric blue jack dempsey’s tank and health issues to look out for, as well as what steps to take if your fish gets sick.

Regular Tank Maintenance To Ensure The Fish’S Health

To keep your electric blue jack dempsey in good health, regular maintenance of their tank is crucial.

  • Electric blue jack dempsey requires a tank of at least 80 gallons to thrive, so make sure you have a big enough tank for them. A smaller tank can cause stress and health issues.
  • Keep the water clean and healthy by performing regular water changes. Replacing up to 25% of the tank’s water weekly or bi-weekly is recommended, depending on the size of your tank.
  • Clean the tank’s filter at least once a month to maintain its effectiveness.
  • Monitor the tank’s temperature, which should be kept between 75-82°f, and maintain a ph level of around 7. 0 to 8. 0 with a moderate level of hardness.
  • Regularly remove debris and uneaten food from the tank to avoid ammonia and nitrate build-up that can be harmful to the fish’s health.

Common Health Issues To Look Out For

Despite your best efforts, electric blue jack dempsey is susceptible to developing health issues. Looking out for signs of illness is crucial to ensure early diagnosis and treatment.

  • Swim bladder disorder, which can cause the fish to float uncontrollably or sink to the bottom of the tank.
  • Ich, a common parasite that causes white spots on the fish’s body and fins.
  • Fungal infections, which can cause cotton-like growths on the fish’s fins or body.
  • Fin rot, which can cause the fish’s fins to fray and deteriorate.

Steps To Take When The Fish Falls Sick

If your electric blue jack dempsey displays signs of illness, you should take immediate action to prevent it from worsening.

  • Quarantine the sick fish immediately to avoid contaminating other fish in the tank.
  • Identify the symptoms of the illness and research the appropriate treatment.
  • Adjust the water temperature and ph level to support the fish’s health.
  • Consult a veterinarian or fish expert for proper diagnosis and medication dosage.
  • Keep an eye on the fish’s progress and continue with the treatment until they’ve fully recovered.

Electric blue jack dempsey care requires more attention than some other fish species. Follow these tips to maintain their tank and keep them healthy. By doing so, you’ll be able to enjoy your fish’s beauty and watch them thrive in their aquarium environment.


Electric blue jack dempsey fish is a gorgeous addition to any aquarium. With its eye-catching electric blue coloration, it’s hard not to fall in love with this species. Electric blue jack dempsey can be a bit challenging, but with the right care, it can be accomplished.

In this section, we’ll discuss the important details you need to know to breed this lovely fish.

How To Identify Male And Female Electric Blue Jack Dempsey

Before you begin breeding, it’s essential to know how to identify male and female fish.

  • Males have longer and pointier dorsal fins than females.
  • Females have a rounder and wider body than males.
  • During breeding, females will have more pronounced breeding tubes than males.

Creating The Right Environment For Breeding

Creating the right environment for breeding is crucial.

  • Provide a spacious aquarium with enough room for the fish to swim and breed.
  • The aquarium should have plenty of hiding places and a substrate suitable for breeding.
  • Maintain a ph level of around 7. 0 to 8. 0, which is ideal for breeding.
  • Keep the temperature between 76°f and 80°f, which is the optimal range for electric blue jack dempsey.
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Caring For The Juveniles

After the breeding process, you will have juveniles to care for until they reach maturity.

  • Feed them small meals several times a day with food suitable for fry (baby fish).
  • Ensure that the water quality is consistent and free of toxins as juveniles are more susceptible to illness than adult fish.
  • Be sure to remove any leftover food or waste to maintain healthy water conditions.
  • You may need to separate the juveniles from the adult fish if the aquarium is overcrowded.

Breeding electric blue jack dempseys can be an enjoyable experience if done correctly with care and attention to detail. By following the tips we provided, you can successfully breed and care for electric blue jack dempsey fish.

Frequently Asked Questions For Electric Blue Jack Dempsey Care: Feeding, Tank Size, And Breeding

What Is The Ideal Tank Size For An Electric Blue Jack Dempsey?

Electric blue jack dempsey fish need at least a 55-gallon tank as they grow up to 10 inches. A larger tank of 75-100 gallons would be ideal to provide them with ample swimming space and suitable living conditions. Providing good filtration and maintaining water quality is crucial for their well-being.

What Is The Best Way To Feed A Electric Blue Jack Dempsey And How Often Should I Feed Them?

Feed your electric blue jack dempsey with high-quality flakes or pellets, supplemented with live or frozen foods like brine shrimp and bloodworms. Feed small amounts 2-3 times a day, only giving what your fish can eat in a few minutes to avoid overfeeding and water pollution.

How Do I Differentiate Between Male And Female Electric Blue Jack Dempsey, And How Do They Breed?

To tell the difference between male and female electric blue jack dempsey, observe their fin shape and size. Males have longer and pointed dorsal and anal fins, while females have shorter and rounder ones. To breed them, supply them with an appropriate tank size, water quality, and temperature.

Provide hiding spaces and prepare for territorial behavior during breeding.

Can Electric Blue Jack Dempsey Thrive With Different Fish Species In The Same Tank?

Yes, electric blue jack dempsey can thrive with different fish species in the same tank. However, it’s important to ensure that the fish are compatible and have similar water and feeding preferences. It’s advisable to research the specific tank mates and monitor their behavior closely to prevent any conflicts.

How Do I Maintain The Water Quality For My Electric Blue Jack Dempsey?

Maintain the water quality of your electric blue jack dempsey by monitoring the temperature, ph levels, and ammonia levels at least twice a week. Change a third of the water weekly, do not overfeed, and clean the filter regularly. Avoid overcrowding the tank, and provide hiding spots and ample space for swimming.

What Are the Care Requirements for Electric Blue Jack Dempsey Fish?

When it comes to the care requirements for Electric Blue Jack Dempsey fish, it is important to follow a comprehensive jack dempsey fish care guide. These stunning fish need a spacious tank, preferably with a minimum capacity of 50 gallons. Maintaining a stable water temperature between 78-82°F, a pH level of 6.5-7.5, and moderate hardness is crucial. A well-balanced diet including high-quality pellets, flakes, and occasional live or frozen food is essential for their health. In addition, providing hiding spots with rocks, driftwood, or plants is recommended to offer them a sense of security. Regular water changes and proper filtration are also important to maintain their well-being.


Electric blue jack dempsey fish are a beautiful addition to any aquarium, but they require some extra care and attention. Feeding them properly with a varied diet and providing them with a suitable tank size is crucial for their wellbeing.

Additionally, breeding these fish can be challenging but rewarding. It’s important to ensure that the breeding pair is healthy and that the tank environment is conducive to spawning. By following the guidelines outlined in this article, you’ll be able to provide the best possible care for your electric blue jack dempsey fish, allowing them to thrive and bring joy to your aquarium for years to come.

So go ahead, give them the love and attention they deserve!

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