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Polli Bichir© Ji-Elle / CC BY-SA 3.0

Polli Bichir

The Polli Bichir (Polypterus polli) is a small bichir with a subdued gray-to-dark-brown coloration, native to the middle and lower Congo River. Its elongated body, row of small dorsal finlets, and eel-like swimming motion give it a wonderfully prehistoric look. It tends to be quiet and secretive, hiding during the day and becoming more active after dark. While generally peaceful, it will eat anything small enough to fit in its mouth, so tankmates should be chosen with care. Considered suitable for intermediate keepers, it does best with hobbyists who already have the basics down, including jump-proofing the tank and feeding it properly.

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About Polli Bichir

A small Congo River bichir with gray-to-dark-brown coloring and a prehistoric look, the Polli Bichir grows to about 32 cm and suits intermediate keepers.

7 things to know before welcoming a Polli Bichir

  1. 1A Tight-Fitting Lid

    Bichirs are strong jumpers and can leap out of the water when startled, especially at night. Always use a tank with a secure, gap-free lid to prevent escapes.

  2. 2Choosing Tankmates

    Polli Bichirs are generally peaceful and rarely attack other fish outright, but they will eat anything small enough to swallow. Choose tankmates of a similar size or larger.

  3. 3A Nocturnal Rhythm

    This fish tends to stay hidden during the day and becomes more active at night or after the lights go out. Providing shelters like driftwood or caves helps it feel secure.

  4. 4Planning for 32 cm

    Adults can reach a standard length of up to about 32 cm. Juveniles can start in a smaller tank, but it's wise to plan for a larger setup well before they reach full size.

  5. 5Feeding a Carnivore

    This species favors animal-based foods. Once acclimated it can often be trained onto prepared pellets, but frozen bloodworms or similar foods help encourage it to eat at first.

  6. 6Best for Intermediate Keepers

    This fish is considered manageable for hobbyists who already have experience with basic water quality management and equipment. First-time keepers may want to build up some experience before taking one on.

  7. 7Congo River Origins

    Native to the middle and lower Congo River, the Polli Bichir has a calm gray-to-dark-brown coloration. It was described by Gosse in 1988 and was long treated as a subspecies of P. palmas.

Frequently asked questions about Polli Bichir

Q.Can Polli Bichirs live with other fish?
A.They are generally peaceful and rarely attack other fish outright, but any fish small enough to fit in their mouth may be eaten. Choosing tankmates of a similar size or larger is the safest approach.
Q.Do they jump out of tanks?
A.Yes, bichirs are known for their jumping ability and may leap out of the water when startled. A tank with a secure, gap-free lid is essential.
Q.Mine barely moves during the day — is it sick?
A.Polli Bichirs are strongly nocturnal and often stay hidden during daylight hours. As long as its appetite and coloration look normal, this behavior is not a cause for concern.
Q.How large do they eventually grow?
A.Adults typically reach a standard length of up to about 32 cm. It's a good idea to plan for a larger tank well before they reach that size.
Q.Are they subject to CITES regulation?
A.The Polli Bichir is not subject to CITES.

Useful tools for Polli Bichir care

💧Aquarium Volume CalculatorCalculate water volume, weight, and heater wattage from tank dimensions🧪Water Quality CheckerFind compatible fish, shrimp, plants & corals based on pH, temperature & hardness🍽️Feeding GuideCheck feeding frequency, portion sizes & supplements by species and growth stage🤝Compatibility CheckerCheck compatibility between two species on a 5-level scale📊Fish Compatibility MatrixCheck fish compatibility at a glance with our matrix chart🔄Nitrogen Cycle GuideAuto-calculate bacteria colonization timeline for new tank cycling🗓️Seasonal Care CalendarMonthly care events and seasonal management tips at a glance🚿Water Change CalculatorAuto-calculate optimal water change frequency and volume by tank size and fish count🐠Stocking CalculatorCalculate max fish capacity for your tank size with overstocking alertsElectricity Cost SimulatorCalculate monthly and annual electricity costs for care equipment with presets🧬Breeding PlannerSelect parent varieties to view breeding schedules and offspring patterns🏞️Tank Layout PlannerGet substrate, plant & hardscape suggestions based on tank size and style🧮Care Cost SimulatorEstimate initial, monthly & annual costs by category, care level and quantity⚖️Species Comparison ToolCompare two species side by side: care difficulty, size, lifespan & temperature🎯Pet Match DiagnosticAnswer 7 questions to find your top 3 perfect pets📋Lifetime Cost SimulatorEstimate lifespan and lifetime costs by species for dogs, cats, reptiles and more🚚Transport Safety CheckerCheck transport safety score and precautions by category, season, method and distance💊Medication Dosage CalculatorCalculate proper medication dosage by body weight and medicine type for fish, reptiles, and small animals⏱️Quarantine & Acclimation TimerManage quarantine periods and acclimation steps with countdown timers. Includes recommended durations by species

Learn more about Polli Bichir in the encyclopedia

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Care difficulty, lifespan, size and diet — all basics covered.

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