
Mokelembembe bichir
The Mokelembembe bichir (Polypterus mokelembembe) is a bichir from the middle Congo River system, described in 2006 and still a relatively recent addition to the hobby. Its dorsal fin sits far back on the body, and it has the slender, elongated build typical of bichirs. According to FishBase, it reaches a maximum standard length of 26.7 cm, so it has a real presence in the tank. Some fish imported under the name "retropinnis" are said to have been this species, so identification calls for care. Little is documented about its lifespan, so it is best to set up a stable, sustainable environment. Its difficulty is rated intermediate, which suits keepers who are comfortable with regular water changes and water quality checks.
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Apply as a breederMokelembembe bichir key facts
- Care level
- Intermediate
- Size
- Up to 26.7 cm SL
- Diet
- Carnivore (bloodworm, prawns, earthworms, fish pieces)
- Water Temperature & Quality
- Few species-specific data on temperature or water chemistry. A tropical river fish; keep water clean with good filtration and regular changes.
- Aquarium
- A slender bottom-dweller that needs floor area more than depth. Provide driftwood and rocks for cover, and a gap-free lid with an air layer above the water.
- Tank Mates & Compatibility
- Eats fish it can swallow; usually compatible with peaceful fish of similar size.
- Diet & Feeding
- A nocturnal carnivore: feed frozen or live bloodworm, prawns, earthworms and fish pieces around lights-out; it may accept sinking pellets for predators.
- Breeding & Egg-laying
- Few reliable reports of breeding in home aquaria.
- Health & Cautions
- It is easily confused with P. retropinnis, so confirm the scientific name and origin. It weakens without access to air.
About Mokelembembe bichir
A guide to the Mokelembembe bichir, a Polypterus from the middle Congo River system with a dorsal fin set far back on the body. Reaches 26.7 cm standard length; intermediate difficulty. Includes pre-purchase tips and FAQs.
7 things to know before welcoming a Mokelembembe bichir
1Identify It Carefully
This species was described in 2006, and some fish imported under the name "retropinnis" are said to have been Mokelembembe bichirs. A dorsal fin set far back on the body is one of its features, but telling it apart still takes care. Before you commit, ask the seller about the scientific name, photos, and the fish's background.
2Intermediate Level
This species is rated as suitable for intermediate keepers. It suits people who can keep up with basic care such as regular water changes and water quality checks. If you are new to tropical fish, it is safer to get comfortable with equipment and water management first.
3Choose a Wide Tank
The maximum standard length is 26.7 cm according to FishBase, so tank size directly affects how comfortable the fish is as it grows. Choose a tank with generous length and depth so it can move along the bottom. Hiding spots such as driftwood or pipes can help it settle in.
4Lid and Air Access
Bichirs are known to gulp air at the surface. Leave an air gap between the water and the lid, but choose a lid that closes securely so the fish cannot slip out through gaps. It also helps to seal the openings around heaters and tubing.
5Careful Tank Mates
Bichirs tend to be strongly carnivorous, so any fish small enough to fit in the mouth may be eaten. Not much is documented about this species' compatibility, so judge tank mates carefully based on how your fish behaves. Fish of similar size with calm movement are the safer choice.
6Feeding and Water Care
Feeding response varies between individuals, so ask the seller what the fish is currently eating before you bring it home. Uneaten food can degrade water quality, so start with small portions and adjust as you observe. Make water checks and regular water changes part of your routine.
7Lifespan Is Unclear
There is little documentation on lifespan, so no clear number of years can be given. Plan your tank and equipment with long-term care in mind. Keeping notes on appetite and condition makes it easier to spot changes early.
Frequently asked questions about Mokelembembe bichir
- Q.Can beginners keep this fish?
- A.Its difficulty is rated intermediate. It is best to get comfortable with basics such as water changes and water quality management before bringing one home.
- Q.How large does it grow?
- A.FishBase lists a maximum standard length of 26.7 cm. Standard length excludes the tail fin, so the total length including the tail is longer.
- Q.How long does it live?
- A.Little is documented about its lifespan, so no clear number of years can be given. It is wise to prepare a sustainable setup with long-term care in mind.
- Q.How do I tell it from retropinnis?
- A.Some fish imported as "retropinnis" are said to have been this species, so identification can be difficult. A dorsal fin set far back on the body is a characteristic of the Mokelembembe bichir. Ask the seller to confirm the scientific name and share photos before you buy.
- Q.Can it live with other fish?
- A.Bichirs tend to be strongly carnivorous, and fish small enough to fit in the mouth may be eaten. Little is documented about this species' compatibility, so choose tank mates of similar size and judge carefully as you observe.
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Learn more about Mokelembembe bichir in the encyclopedia
View Mokelembembe bichir encyclopedia entry →
Care difficulty, lifespan, size and diet — all basics covered.
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