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Armored Bichir / Barred Bichir
Polypterus delhezi
A stunning, tiger-striped 'dragon fish' from the Congo. Reaches 35 cm and is significantly bulkier than the Senegal Bichir. A heavily armored, strictly nocturnal bottom-stalker. Absolutely requires a sand substrate and completely secure lids.
- Family
- Polypteridae
- Origin
- Africa (Bacino centrale e superiore del fiume Congo)
- Tank use
- Used in 0 tanks
25 °C - 29 °C
6.5 - 7.5
Freshwater
Bottom
35 cm
Description
Geographic Origin and Biotope: Endemic to the vast central and upper Congo River Basin in Africa. Inhabits dark, slow-moving river margins, lurking under submerged root networks and thick muddy/vegetated banks.
Taxonomy and Morphology: A highly sought-after Polypteridae (upper-jaw bichir group). Grows to a hefty 35-40 cm (14-16 inches). Considerably thicker, deeper, and more 'muscular' in appearance than the sleek Senegal. Features 10-13 heavily armored dorsal finlets. It possesses all ancient Bichir traits: interlocking diamond ganoid scales, fully functional lungs to breathe air, and fleshy pectoral fins used to physically crawl across the tank floor.
Social Behavior: Far stealthier and heavily nocturnal compared to the Senegal Bichir. During daylight, it prefers to wedge itself into dark caves or under thick logs, only lazily rising to the surface for a gulp of air. After lights-out, it transforms into a relentless, slow-stalking bottom predator, using its sensory nasal tubes to hunt down sleeping fish or meaty scraps.
Coloration and Sexual Dimorphism: Visually spectacular. The base color is a dark mottled grey, olive, or light brown. Its hallmark feature is a series of 5 to 8 stark, thick, irregular BLACK BANDS running across its upper back and fading down the sides (resembling tiger stripes). Captive breeders prize specimens with perfectly distinct, dark bands. Mature males have a massively enlarged, fleshy anal fin compared to females.
Care and observations
Tank Setup: A heavy, thick fish requiring a large footprint (120-150 cm / 48-60 inches length, with good width). SAND SUBSTRATE IS A STRICT MANDATORY RULE. They lunge violently at food and will vacuum up standard aquarium gravel, which creates fatal, incurable intestinal blockages. Provide large, dark PVC or driftwood tunnels. YOU MUST HAVE A PERFECTLY SEALED, HEAVY LID with zero gaps, but you MUST leave 3-4 inches of air above the water so the fish can breathe air and survive.
Feeding: Massive Carnivore. Its mouth can open astonishingly wide. Best fed at dusk/night. Gladly accepts massive sinking carnivore massivore pellets, whole thawed shell-on shrimp, tilapia fillets, mussels, and jumbo earthworms. Do not feed live feeder fish due to the massive risk of parasites. It hunts by smell, taking time to find the food.
Water Quality: Prefers slightly softer, cleaner water than the Nile-dwelling Senegal. pH 6.0-7.5. Temp 24-28°C (75-82°F). The sheer volume of meaty waste they produce necessitates enormous, industrial-grade biological filtration (sumps or giant canisters) to keep nitrates from poisoning them.
Compatibility: Do not underestimate the size of fish they can swallow in the dark. Small Cichlids and large Tetras will disappear overnight. Excellent in 'Monster' setups with peaceful giants: Large African Cichlids (Frontosa, large Haps), huge Datnoides, and large Synodontis. AVOID SUCKERMOUTH CATFISH (Plecos, Chinese Algae Eaters) because they will inevitably latch onto the Bichir's flat back at night and suck off its protective slime coat down to the flesh.
Reproduction: Rare but achieved in large heavily-planted breeder tanks. Eggs scattered in Java moss. Highly cannibalistic fry.
Risks: 1. FATAL BOWEL IMPACTION from using typical aquarium gravel instead of fine sand. 2. Escaping through tiny lid gaps and drying up like jerky on the floor. 3. Fatal flesh wounds inflicted by Plecostomus/Algae eaters sucking on them. 4. Drowning if denied access to surface air.
Fish profile
- Tank level
- Bottom
- Adult size
- 35 cm
- GH
- 5 dGH - 15 dGH
- KH
- n/a
- TDS
- n/a
- Conductivity
- n/a
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.