The Red Phantom Tetra (Hyphessobrycon sweglesi), formerly known as Megalamphodus sweglesi, is a vibrant and peaceful freshwater fish native to the Orinoco River basin in Colombia and Venezuela. Renowned for its striking red coloration and distinctive black shoulder spot, this species is a favorite among aquarists seeking to add dynamic beauty to their community tanks.
🐟 Species Overview
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Scientific Name: Hyphessobrycon sweglesi
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Common Name: Red Phantom Tetra
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Origin: Orinoco River basin, Colombia and Venezuela
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Size: Up to 1.5 inches (4 cm)
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Lifespan: 3–5 years
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Temperament: Peaceful, shoaling species
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Swimming Level: Middle to upper regions of the aquarium
🏡 Aquarium Setup
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Tank Size: Minimum of 20 gallons for a small group
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Group Size: Keep in schools of at least 6–8 individuals to promote natural behavior and reduce stress
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Substrate: Soft sand or fine gravel
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Decor: Incorporate driftwood, rocks, and dense vegetation to mimic natural habitat
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Lighting: Dim lighting; floating plants can help diffuse light
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Filtration: Gentle water flow; avoid strong currents
💧 Water Parameters
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Temperature: 68–73°F (20–23°C)
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pH: 4.5–7.5
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Hardness: 5–18 dGH
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Water Changes: Regular weekly changes (20–25%) to maintain water quality
🍽️ Diet & Feeding
Red Phantom Tetras are omnivorous and thrive on a varied diet:
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Staple Foods: High-quality flake foods or micro pellets
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Supplements: Live or frozen foods such as brine shrimp, daphnia, and bloodworms
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Feeding Frequency: Feed small amounts 2–3 times daily; avoid overfeeding
🤝 Tankmates & Compatibility
Red Phantom Tetras are ideal for community aquariums with other peaceful species:
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Compatible Tankmates: Other small tetras, rasboras, Corydoras catfish, and dwarf cichlids
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Avoid: Large or aggressive fish that may intimidate or prey on them
🐣 Breeding Tips
Breeding Red Phantom Tetras can be achieved with careful preparation:
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Breeding Tank: Set up a separate tank with soft, slightly acidic water and fine-leaved plants or spawning mops
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Conditioning: Feed breeding pairs with live or frozen foods to encourage spawning
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Spawning: Females may lay up to 300 eggs; remove adults post-spawning to prevent egg predation
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Fry Care: Keep the tank dimly lit; feed fry infusoria or finely crushed flake food after hatching
📝 Care Summary
| Aspect | Details |
|---|---|
| Tank Size | Minimum 20 gallons for a small group |
| Temperature | 68–73°F (20–23°C) |
| pH Range | 4.5–7.5 |
| Diet | Omnivorous; varied diet with live/frozen foods |
| Behavior | Peaceful; shoaling; active swimmers |
| Breeding | Egg scatterers; separate breeding tank recommended |
By maintaining optimal water conditions, providing a balanced diet, and ensuring a well-structured environment with ample hiding spots, Red Phantom Tetras can thrive and display their full coloration and natural behaviors in home aquariums.
