Rob's Aquatics Fish Shop
4” Fire Eel
4” Fire Eel
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🔥 Fire Eel (4”) – Exotic, Intelligent, and Ready to Grow Into a True Showstopper
Add a legendary oddball to your monster tank with the Fire Eel, one of the most unique and charismatic freshwater species in the aquarium hobby. At 4 inches, these juveniles are the perfect grow-out size—ready to thrive in your setup and eventually reach their full potential as a striking, interactive bottom-dweller.
Known for their bold red striping, elongated body, and inquisitive behavior, Fire Eels (Mastacembelus erythrotaenia) aren’t true eels, but spiny eels—a group of fish famous for their intelligence and personality. Over time, they recognize their keepers, hand-feed, and even beg for food at the glass!
🐟 Species Profile:
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Scientific Name: Mastacembelus erythrotaenia
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Common Name: Fire Eel
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Size: 4 inches (can grow to 20–30 inches)
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Temperament: Semi-aggressive, territorial with similar species
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Tank Size: 90+ gallons minimum; larger for adults
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Water Parameters: 74–82°F | pH 6.8–7.5
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Diet: Carnivore – prefers bloodworms, shrimp, krill, and carnivore pellets
🤝 Recommended Tank Mates:
Best housed with larger, peaceful or semi-aggressive fish that won’t nip at the eel or fit in its mouth. Ideal companions include:
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Peacock Bass
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Oscars & Large Cichlids
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Bichirs
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Datnoids
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Large Catfish or Plecos
Avoid small fish, shrimp, and other eels or spiny species to reduce territorial disputes.
Fire Eels need plenty of hiding spots, like caves, PVC pipes, or driftwood. They are bottom dwellers but will explore the whole tank—especially when food is present. A soft substrate is best to prevent injury to their delicate underbellies.
🛒 Why Buy from RobsAquatics.com?
Each 4” Fire Eel is:
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Hand-selected for health and color
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Acclimated to prepared foods and stable conditions
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Shipped live with our Live Arrival Guarantee
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A long-living centerpiece fish with loads of personality
This is the ideal starter size for anyone looking to raise a Fire Eel and build a monster tank around it.
📦 Limited availability – exotic spiny eels sell out fast! Get yours today and watch it grow into a true underwater dragon—only at RobsAquatics.com.
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