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Species profile

Black Neon Tetra

Hyphessobrycon herbertaxelrodi

Common names: Black Neon Tetra, Black Neon

Recognized speciesTetras
Black Neon Tetra (Hyphessobrycon herbertaxelrodi)

Adult size

Up to 3.5 cm

Typical adult length 3–3.5 cm.

Up to 3.5 cm

Countries of origin

  • See all stock from Brazil

Good fit for your tank?

Good fit for

  • A peaceful community with a broad mix of small fish
  • A planted tank of around 70 litres or more
  • A keeper looking for a tougher alternative to neons

Think carefully if

  • You can keep only a handful of fish
  • Your tankmates are big enough to eat small tetras
  • You expect it to look like a Neon Tetra

A peaceful Brazilian tetra with a bold black band below a pale line. It is hardy, sociable, and a good choice for a planted community aquarium.

Appearance and Identification

A slim fish with a broad black band along the flank, topped by a pale, slightly iridescent line. The eye often shows a touch of red above the pupil.

The black band without any red marks it apart from Neon and Cardinal Tetras.

Mature females are deeper-bodied and slightly larger than males.

Tank Requirements

Suggested filter
About 280–350 litres an hour
Suggested heater
About 75–100 W for this tank
Minimum tank volume
70 litres
Minimum tank length
80 cm
Minimum group size
8
Recommended group size
10
Activity level
Active
Flow preference
Low to moderate
Planting preference
Moderately planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Low

Provide planted edges with open swimming space. Dark substrate and some floating cover make the black band stand out.

Behaviour and Tankmates

A peaceful, active schooling fish that uses the middle of the tank.

Keep a mixed-sex group of at least 8 to 10.

Not territorial.

Suitable with other peaceful tetras, rasboras, corydoras, and small gouramis. Avoid fish large enough to swallow it. Shrimplets may be eaten.

Check tankmates for this species

Water Parameters

Temperature
20–28 °C
pH
5–7.5
GH
1–12
Stability importance
Normal

Adapts to a broad range, but soft to moderately hard water suits it best. Keep ammonia and nitrite at zero.

Parameter caveat
Most fish sold are farm-bred and more adaptable than wild stock. Acclimate slowly and use the seller's water as a starting point rather than chasing an exact number.

Feeding

Diet types
Insectivore, Omnivore
Feeding frequency
Once or twice daily
Preferred foods
  • Fine micro granules or crushed flakeUse a particle size the fish can swallow whole, and feed only what is eaten within a couple of minutes.
  • Frozen or live daphnia and cyclopsSmall crustaceans add variety and help bring adults into breeding condition.
  • Frozen or newly hatched brine shrimpA good small meat food a few times a week rather than the only food.

An undemanding omnivore that takes most small foods.

Vary the diet through the week, and feed in small amounts so nothing reaches the substrate uneaten.

Breeding

Breeding type
Egg Scatterer
Breeding difficulty
Moderate
Brood or egg count
Typically dozens of small eggs
Incubation
1 days
Parental care
None
Baby foods
  • Infusoria or parameciumNeeded for the first days after fry become free-swimming, because the fry are very small.
  • Fine powdered fry foodUse sparingly as a supplement, and siphon out anything left uneaten.
  • Newly hatched brine shrimpIntroduce once the fry are large enough to swallow it, usually after several days.
  • MicrowormsA useful next step for fry that are still too small for brine shrimp.

An egg-scattering free spawner with no parental care. Move conditioned adults to a dim tank with mesh, marbles, or spawning mops. Eggs usually appear the following morning, and the adults should then be removed.

Habitat and Origin

Geographic origin
Brazil, South America
Natural habitat
Freshwater River, Slow River, Vegetated Shoreline
Aquarium contexts
Breeding Aquarium, Planted Aquarium
Audience level
Beginner

Classification

Profile type
Recognized species
Genus
Hyphessobrycon
Family
Characidae
Species group
Fish, Tetras

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