Description
Green Senegal Bichir (Polypterus senegalus “Green”)
📌 Basic Info
Scientific Name: Polypterus senegalus (Green morph)
Common Name: Green Senegal Bichir / Dinosaur Eel (Green variant)
Size: 12 – 16 inches (30 – 40 cm)
Lifespan: 10 – 15 years (with proper care)
Tank Zone: Mostly bottom, sometimes mid-level at night
🌊 Water Parameters
TDS: 150 – 300 ppm
pH: 6.2 – 7.8
Temperature: 24°C – 28°C (75°F – 82°F)
Water Type: Freshwater, soft to moderately hard
Hardness: GH 5 – 15, KH 3 – 8
🐟 Characteristics
Attractive greenish-grey body color with darker patterns.
Hardy and ancient fish with lung-like breathing ability.
Semi-aggressive predator but generally calm.
Nocturnal – more active in low light.
Needs a large tank due to size and growth.
🍽️ Food
Type: Carnivorous
Diet: Frozen shrimp, fish fillets, earthworms, bloodworms, sinking carnivore pellets.
Feeding Frequency: Once daily for adults; juveniles 1–2 times a day.
🛠️ Maintenance
Tank Size: Minimum 75 gallons for one adult.
Strong filter with good oxygen but low current.
Weekly water change: 20–25%.
Provide hiding caves, driftwood, and plants.
Tight lid – bichirs can escape by jumping.
👥 Social Behavior
Minimum Group Size: Can live alone or with other bichirs if tank is large.
Tank Mates: Larger peaceful/semi-aggressive fish like silver dollars, big cichlids, catfish, arowanas.
Avoid: Small fish, shrimp, or snails – will be eaten.
✅ Do’s
Keep them in a large, well-covered tank.
Provide protein-rich food variety.
Use dim lighting and hiding spaces.
Ensure stable, clean water conditions.
❌ Don’ts
Don’t keep with small community fish (they’ll become prey).
Don’t keep in small or overcrowded tanks.
Don’t use only flakes – needs meaty diet.
Don’t leave tank uncovered – they jump.
⭐ Quick Tips
Hardy, prehistoric-looking fish → called “Dinosaur Eel”.
Green variety is rarer and attractive in big predator tanks.
Best for intermediate to advanced aquarists with large aquariums.




