Common Name: Congicus x PBB Bichir (Hybrid)
Scientific Name: Polypterus congicus x Polypterus bichir bichir
Other Names: Congicus-Bichir Bichir Hybrid, PGG Bichir, Golden Gun Bichir
The Congicus x PBB Bichir is a rare and highly sought-after hybrid between Polypterus congicus and Polypterus bichir bichir, two of the largest species in the Polypterus genus. This hybrid combines the elongated, heavy-bodied structure of P. congicus with the distinctive patterning and head shape of P. bichir bichir, resulting in a unique and robust bichir. It retains the prehistoric, armored appearance characteristic of the genus and is prized by collectors for its large size, impressive pattern variation, and powerful presence in an aquarium.
Habitat and Distribution:
Since this is a hybrid, it does not exist in the wild, but its parent species originate from Central and West Africa. Polypterus congicus is found in the Congo River Basin, while Polypterus bichir bichir primarily inhabits West African river systems, including the Nile and Chad basins. Both species thrive in slow-moving or stagnant waters, such as floodplains, marshes, and large rivers, where they use their lung-like swim bladder to survive in oxygen-poor environments.
Size and Lifespan:
This hybrid is expected to reach 30-36 inches (76-91 cm) in length, making it one of the largest bichirs available. Lifespan is estimated at 15-25 years, depending on diet and water conditions.
Diet and Behavior:
Like its parent species, this hybrid is a carnivorous predator that requires a protein-rich diet. Ideal foods include:
- Chopped raw tilapia, catfish, or whitefish
- Frozen bloodworms and blackworms
- Live or frozen nightcrawlers
- High-protein carnivore pellets
It is highly predatory, exhibiting slow but deliberate movements and a tendency to ambush prey. While not aggressive toward similar-sized fish, it will eat anything small enough to fit in its mouth. It is most active at night, relying on its keen sense of smell and electroreception to locate food.
Breeding and Reproduction:
This hybrid is captive-bred, and natural reproduction between these species in the wild is unlikely due to geographic separation. In captivity, hybrid breeding requires controlled conditions, hormone treatments, and specialized knowledge of Polypterus spawning behaviors. Females lay hundreds of eggs among dense vegetation, and fry hatch within 3-4 days, requiring live baby brine shrimp or finely chopped protein-rich foods.
Aquarium Care and Tank Requirements:
Due to its massive adult size, this hybrid requires a minimum of 300 gallons, though 500+ gallons is preferred for long-term care. The ideal tank setup includes:
- Substrate: Soft sand or bare-bottom to prevent injury
- Decor: Large driftwood, rock caves, and shaded areas for hiding
- Filtration: Heavy-duty canister or sump filtration to handle high bioload
- Water Movement: Low to moderate flow, mimicking slow-moving river conditions
- Lighting: Dim to moderate, with floating plants to create shaded areas
Ideal Tank Mates:
This hybrid should be housed with large, peaceful fish that can hold their own but are not aggressive toward bichirs. Suitable tank mates include:
- Other large bichirs
- Arowanas
- Large catfish (Pseudoplatystoma, Brachyplatystoma, Oxydoras)
- Giant gouramis
- Datnoids and peacock bass
Avoid housing with aggressive cichlids or any fish small enough to be eaten.
Difficulty Level:
Advanced. Due to its large size, predatory nature, and space requirements, this hybrid is best suited for experienced aquarists with large tanks or indoor ponds.
Water Parameters:
- Temperature: 76-84°F (24-29°C)
- pH: 6.5-7.5
- General Hardness (GH): 5-15 dGH
- Carbonate Hardness (KH): 4-10 dKH
- Ammonia: 0 ppm
- Nitrite: 0 ppm
- Nitrate: <20 ppm (regular water changes required)
Additional Information:
- This hybrid is known for its impressive growth rate, capable of reaching over a foot in its first year if well-fed.
- It displays varying patterns, with some individuals inheriting more P. bichir bichir markings while others resemble P. congicus.
- Like all bichirs, it requires a tightly sealed lid to prevent escapes, as it is a skilled jumper.
The Congicus x PBB Bichir is a stunning and powerful hybrid that combines the best traits of its parent species. With the right care, it can become a true showpiece in a large predatory aquarium.
