American Cichlid – Jack Dempsey “EBJD Split Gene” 5cm

Jack Dempsey Cichlid: A Bold and Beautiful Choice

The Jack Dempsey Cichlid (Rocio octofasciata), particularly the EBJD Split Gene variety, is a stunning and unique freshwater fish. Known for its intense colours and assertive personality, this cichlid makes an eye-catching addition to aquariums for experienced aquarists. Its vibrant appearance and engaging behaviour bring life and character to larger tanks.

Size and Lifespan

Jack Dempsey Cichlids grow up to 15–20 cm in length, with males typically larger and more colourful than females. With proper care, they can live for 10–15 years, providing long-term companionship and enjoyment.

Tank Size and Requirements

A tank of at least 200 liters is required for a single Jack Dempsey, but larger tanks of 300 liters or more are recommended for pairs or multiple fish. They thrive in water temperatures between 24°C–28°C and a pH range of 6.5–7.5. Decorate the tank with rocks, driftwood, and sturdy plants to create hiding spots and territories. A sandy or fine gravel substrate is ideal, as these cichlids enjoy digging.

Tank Mates

Jack Dempsey Cichlids are semi-aggressive and territorial, especially during breeding. They are best kept with similarly sized, robust fish such as Green Terrors, Oscars, or Convict Cichlids. Avoid housing them with smaller or very timid species, as these may become targets of aggression. Providing ample space and hiding spots helps reduce conflicts.

Feeding Jack Dempsey Cichlids

These omnivorous cichlids thrive on a varied diet. High-quality cichlid pellets or flakes should be the primary food source. Supplement their diet with live or frozen treats such as brine shrimp, bloodworms, and earthworms to enhance their colour and health. Occasionally offering plant-based foods like spirulina flakes or blanched vegetables ensures a balanced diet.

Understanding EBJD Genetics

The Electric Blue Jack Dempsey (EBJD) is a stunning variation of the traditional Jack Dempsey, prized for its brilliant electric blue coloration. This colour morph results from a recessive genetic trait, meaning both parents must carry the EBJD gene to produce electric blue offspring.

To breed EBJDs:

1. Pair an Electric Blue Jack Dempsey with a standard Jack Dempsey that carries the EBJD gene (split gene).
2. The offspring will include 50% split-gene carriers and 50% standard Jack Dempseys.
3. To increase the likelihood of producing EBJDs, breed two split-gene carriers, though this requires careful planning and patience.

Breeding EBJDs requires understanding their genetics and creating a stress-free environment with pristine water quality and proper nutrition. While rewarding, it can take several generations to achieve consistent electric blue offspring.

Breeding Jack Dempsey Cichlids

Breeding these cichlids can be rewarding but requires careful planning. They are substrate spawners and prefer flat rocks or other surfaces for egg-laying. Both parents actively guard the eggs and fry, displaying strong parental instincts. To encourage breeding, maintain clean water, a stable environment, and high-quality nutrition. Feed fry finely crushed flakes or baby brine shrimp for optimal growth.

FAQs

How big do Jack Dempsey Cichlids get?
They grow up to 20 cm, making them ideal for medium to large aquariums.

Are they aggressive?
They can be semi-aggressive and territorial, especially when breeding.

What tank mates are suitable?
Robust fish like Green Terrors, Oscars, and Convict Cichlids are good companions.

What do they eat?
They eat high-quality cichlid pellets, live or frozen foods like bloodworms, and occasional vegetables like spinach or zucchini.

How do they breed?
They are substrate spawners and actively guard their eggs and fry.

Species Overview

• Species: Rocio octofasciata
• Common Name: Jack Dempsey Cichlid (EBJD Split Gene)
• Origin: Central America
• Diet: Omnivore
• PH Range: 6.5–7.5
• Temperature: 24°C–28°C
• Max Size: Up to 20 cm
• Tank Size: Minimum 200 liters