Quick Answer
The Black Phantom Tetra is a beginner-level freshwater fish needing at least a 10-gallon tank, 72-82°F water, and pH 6.0-7.5. Black Phantom Tetras are hardy and forgiving, making them ideal for newcomers to the hobby.
Black Phantom Tetra Overview
The Black Phantom Tetra (Hyphessobrycon megalopterus) is an excellent choice for newcomers to the hobby, native to Brazil, Bolivia. As a freshwater omnivore, this species has earned its place as a staple in community tanks, species-only setups, and planted aquariums worldwide. The Black Phantom Tetra is a peaceful species that generally coexists well with other non-aggressive fish. With proper care and appropriate water conditions, Black Phantom Tetras can live for several years and become a rewarding centerpiece — or supporting cast — of your aquarium.
According to FishBase's species profile, the Hyphessobrycon megalopterus is widely distributed across Brazil and has been selectively bred in captivity for decades, resulting in a robust trade fish that typically adapts well to aquarium conditions. That said, replicating natural water parameters as closely as possible always produces the healthiest fish.
Tank Requirements
The Black Phantom Tetra requires a 10-gallon nano tank or larger. Crowding this species into too-small quarters leads to stress, aggression, and disease — the most common cause of failure with this fish. Budget for a small hang-on-back (HOB) filter or sponge filter to keep the water clean and well-oxygenated.
- Minimum Tank Size: 10 gallons
- Temperature: 72-82°F (ideal: ~77°F)
- pH: 6.0-7.5 To lower pH toward the 6.0-7.5 range, consider RO/DI water, driftwood, or Indian almond leaves. See our guide on how to lower pH in your aquarium.
- Filtration: A small hang-on-back (hob) filter or sponge filter
A fine to medium-grain substrate is appropriate for most specimens, with some species preferring sand or smooth gravel. Once your tank is fully cycled, perform 20–30% water changes weekly to maintain stable parameters. Stability matters more than hitting exact numbers — sudden swings cause far more harm than gradual drift.
Diet & Feeding
The Black Phantom Tetra is an opportunistic omnivore that accepts a wide variety of foods, making feeding straightforward. Quality flake food or micro-pellets as a staple, supplemented with frozen bloodworms, brine shrimp, and occasional vegetable matter are all excellent choices for this species.
Feed once or twice daily, what they can eat in 2 minutes. Avoid overfeeding — it's the most common water quality mistake. Rotating between 3–4 different foods provides balanced nutrition and keeps fish actively feeding.
Compatibility & Tank Mates
The Black Phantom Tetra has a peaceful temperament and does well in community aquariums with similarly sized, non-aggressive fish.
Good tank mate options from our database include African Dwarf Frog, Bolivian Ram, and Bristlenose Pleco. Avoid housing Black Phantom Tetras with highly aggressive species or fish that compete for the same territory.
Common Health Issues
The Black Phantom Tetra is relatively hardy, but no aquarium fish is immune to illness. Prevention through clean water and a varied diet is always better than treatment. For detailed species-specific health notes, SeriouslyFish has an excellent care sheet for the Black Phantom Tetra.
Ich (White Spot Disease)
The most common freshwater disease — small white spots on fins and body. Raise temperature to 82–86°F and treat with API Super Ich Cure. See our full guide on treating ich.
Fin Rot
Bacterial deterioration of fin tissue, usually caused by poor water quality. Improve water changes, remove organic waste, and treat with Kanaplex or Maracyn if severe.
Velvet (Oodinium)
A parasitic infection causing a gold-dust shimmer on the body. More subtle than ich but equally dangerous. Treat with copper-based medication in a quarantine tank.
Recommended Products
Frequently Asked Questions
What size tank does a Black Phantom Tetra need?
The Black Phantom Tetra requires a minimum of 10 gallons. Smaller tanks cause stress, reduce lifespan, and increase disease susceptibility. If you can afford a larger tank, always go bigger — fish generally thrive with extra space.
What do Black Phantom Tetras eat?
The Black Phantom Tetra is an omnivore. A quality flake or pellet staple supplemented with frozen bloodworms, brine shrimp, and occasional vegetable matter provides balanced nutrition. Feed once or twice daily.
What water temperature and pH does the Black Phantom Tetra need?
Maintain water temperature between 72-82°F and pH between 6.0-7.5. Use a reliable aquarium thermometer and test your water weekly. Stability is more important than hitting exact numbers — sudden parameter swings are more dangerous than gradual drift.
What fish can live with a Black Phantom Tetra?
The Black Phantom Tetra can coexist with African Dwarf Frog, Bolivian Ram, Bristlenose Pleco, among others with similar temperament and water requirements. Avoid pairing with aggressive fin-nippers or much larger predators.
Is the Black Phantom Tetra good for beginners?
Yes — the Black Phantom Tetra is an excellent beginner fish. It tolerates a range of water conditions, accepts most foods, and is widely available at fish stores. Start with a properly cycled tank and stable water parameters, and you'll have great success.
Get weekly guides from AquariumLab
No spam. Unsubscribe anytime.