Introduce a truly extraordinary species to your aquarium with the Marbled Lungfish (Protopterus aethiopicus), a prehistoric fish that combines strength, adaptability, and beauty. Known for its distinctive elongated body and marbled brown-and-cream pattern, this species is more than just a fish – it’s an aquarium centerpiece with ancient origins and unique survival traits.

Measuring 25–35 cm when sold (and capable of reaching up to 1 meter in adulthood), the Marbled Lungfish requires ample space and excellent care. It is ideal for experienced aquarists who want something extraordinary in their collection.

✅ Key Features

• Size: 25–35 cm (juvenile), can grow over 1 meter

• Temperament: Semi-aggressive, solitary

• Care Level: Moderate to Advanced

• Lifespan: Up to 20 years with proper care

• Unique Trait: Has lungs and can breathe atmospheric air

Care Guide for Marbled Lungfish

✅ Tank Requirements

• Minimum Tank Size: 300–400 liters (75–100 gallons) for juveniles; much larger for adults

• Aquascape: Minimal decorations – provide sand or fine gravel substrate and a few hiding spots like PVC pipes or rocks

• Cover: Strong, tight-fitting lid (they can escape and breathe air)

• Lighting: Low to moderate (they prefer dim conditions)

✅ Water Parameters

• Temperature: 24°C – 30°C (75°F – 86°F)

• pH Level: 6.0 – 8.0 (tolerant but prefers slightly acidic to neutral)

• Water Hardness: Soft to moderately hard water

• Filtration: Powerful filtration system – produces a lot of waste

• Water Changes: 25–30% weekly for pristine conditions

The Marbled Lungfish is extremely hardy and can survive in low-oxygen environments thanks to its lung-like organ, but stable water quality is essential for long-term health.

✅ Feeding Habits

The Marbled Lungfish is a carnivore with a strong appetite. In the wild, it feeds on fish, invertebrates, and amphibians.

• Diet in Captivity:

  • Live or frozen fish

  • Worms (earthworms, bloodworms)

  • Shrimp, prawns, and crustaceans

  • High-quality carnivore pellets

  • Occasional meaty treats like mussels or clams

Feed 2–3 times per week. Avoid overfeeding, as they grow quickly and can become obese.

✅ Tank Mates

Not recommended for community tanks. Marbled Lungfish are territorial, predatory, and powerful, often eating or injuring smaller fish. Best kept alone or in a species-only setup.

✅ Behavior & Interesting Facts

• Air-Breathing: Can survive in oxygen-poor water by breathing air

• Estivation Ability: In the wild, they can burrow and survive dry seasons for months

• Ancient Species: Considered a living fossil, largely unchanged for millions of years

Why Choose a Marbled Lungfish?

• Rare and fascinating centerpiece for large aquariums

• Extremely hardy and adaptable to various conditions

• Unique evolutionary trait: Can breathe air and survive harsh environments

• Long lifespan – a true long-term pet for serious hobbyists

✅ Ideal for large custom tanks and experienced aquarists
✅ A true conversation starter and prehistoric marvel