Polypterus congicus, the Congicus bichir, is a large, prehistoric freshwater fish with armored scales, perfect for spacious tanks and experienced aquarists.

🐟 Polypterus congicus – Product Description

The Polypterus congicus, commonly known as the Congicus bichir, is a majestic species of bichir native to the Congo River Basin. With its elongated, armored body and distinctive pattern of dark vertical bars, this prehistoric fish offers a captivating addition to large freshwater aquariums. Growing up to 24–30 inches (60–75 cm), the Congicus bichir requires ample space and expert care, making it ideal for advanced hobbyists fascinated by ancient aquatic species.

🌊 Water Conditions

• Temperature: 75–82°F (24–28°C)

• pH Range: 6.0 – 7.5 (slightly acidic to neutral)

• Hardness: 5–15 dGH

• Tank Size: Minimum 125 gallons for adult specimens to allow comfortable swimming space

• Filtration: Strong filtration with moderate water flow; maintain pristine water conditions

• Substrate: Soft sand or smooth gravel to protect sensitive barbels and skin

• Tank Setup: Include plenty of hiding places with driftwood, rocks, and caves; low lighting preferred to replicate natural habitat

🍽️ Feeding Habits

• Diet: Carnivorous and opportunistic feeder

  • Accepts a wide variety of foods such as live or frozen bloodworms, earthworms, shrimp, small fish, and carnivore pellets

  • May consume feeder fish; caution advised to prevent disease introduction

• Feeding Frequency: Feed once or twice daily, ideally during dusk or nighttime when most active

• Feeding Tips: Offer food near the bottom or use feeding tongs to simulate natural hunting behavior

🐠 Tank Mates

• Compatible Tank Mates:

  • Larger, peaceful to semi-aggressive fish like large barbs, gouramis, and robust catfish

  • Other bichir species of similar size and temperament

• Avoid:

  • Small fish that can be seen as prey

  • Aggressive fish that may stress or injure the Congicus bichir

  • Overcrowding to reduce territorial aggression

🛠️ Care and Behavior

• Temperament:

  • Semi-aggressive and territorial, especially with conspecifics or similar species

  • Mostly nocturnal but may show daytime activity in calm, well-maintained tanks

  • Best kept singly or in very large tanks if housed with conspecifics

• Behavior:

  • Bichirs breathe atmospheric air via a specialized swim bladder, so access to the water surface is essential

  • Slow-moving and curious, often exploring their environment and utilizing hiding spots

• Tank Maintenance:

  • Regular water changes of 25–40% weekly to maintain high water quality

  • Monitor ammonia and nitrite levels closely, as bichirs are sensitive to poor water conditions

• Health:

  • Generally hardy but susceptible to infections if stressed or kept in poor water quality

  • Stable temperature and water parameters are key to longevity and health

📌 Summary

The Polypterus congicus is an impressive prehistoric fish that brings both beauty and intrigue to large freshwater aquariums. Its impressive size, armored body, and unique pattern make it a standout species for experienced aquarists. While hardy, it requires spacious tanks, stable water conditions, and compatible tank mates to thrive. Whether kept in a species-specific setup or with similarly sized tank mates, the Congicus bichir offers a captivating glimpse into ancient aquatic ecosystems and is a rewarding addition for dedicated hobbyists.