Green Fire Tetra

Green Fire Tetra
Latin name:
(Aphyocharax rathbuni)

Care Level





Green, Orange, Yellow



Preferred Conditions

72-80° F, KH 4-8, pH 6.6-7.0

Avg. Max Size


Minimum Tank Size

10 gallons


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Are you looking for a fish that will add a splash of color and vibrancy to your aquarium? Look no further than the Green Fire Tetra, a captivating species that’s sure to turn heads.

Green Fire Tetra: A Neon Tetra’s Cousin

The Green Fire Tetra (Hemigrammus erythrozonus) is a close relative of the popular Neon Tetra, sharing similar characteristics and care requirements. However, the Green Fire Tetra stands out with its unique coloration, featuring a brilliant green body and a vibrant red stripe running along its side. This striking appearance has made it a sought-after fish among aquarists.

Characteristics and Appearance

  • Size: The Green Fire Tetra typically grows to a length of about 1.5 inches (4 cm).
  • Coloration: Its body is a brilliant green, with a vibrant red stripe running along its side. The fins are transparent, often with a slight yellow or orange tint.
  • Temperament: Green Fire Tetras are generally peaceful and schooling fish, making them ideal for community aquariums.

Care Requirements for the Green Fire Tetra

Providing the Green Fire Tetra with the proper care is essential for its well-being and longevity. Here are some key factors to consider:

Water Parameters

  • Temperature: The ideal temperature range for Green Fire Tetras is between 72-82°F (22-28°C).
  • pH: The pH level should be slightly acidic, between 5.0 and 7.0.
  • Hardness: Soft to moderately hard water is preferred, with a hardness range of 5-15 dGH.


  • Omnivorous: Green Fire Tetras are omnivorous, meaning they eat both plant-based and animal-based foods.
  • Variety: Offer a varied diet consisting of high-quality flakes, pellets, frozen or live foods such as brine shrimp, daphnia, and bloodworms.

Tank Size and Setup

  • Minimum Tank Size: A 10-gallon tank is the minimum recommended size for a small group of Green Fire Tetras.
  • Substrate: Use a fine-grained substrate, such as sand or small gravel, to provide a comfortable environment for the fish.
  • Plants: Include plenty of live plants to provide hiding places and create a natural habitat.

Creating a Thriving Habitat for Green Fire Tetras

To ensure the well-being of your Green Fire Tetras, it’s important to create a thriving habitat that meets their specific needs:

Water Quality

  • Regular Water Changes: Perform regular water changes of about 20-30% every week to maintain water quality.
  • Filtration: Use a high-quality filter to keep the water clean and free of debris.


  • Moderate Lighting: Provide moderate lighting to mimic their natural habitat.
  • Avoid Direct Sunlight: Avoid placing the tank in direct sunlight, as this can lead to algae growth and stress for the fish.

Tank Mates

  • Peaceful Community: Green Fire Tetras are peaceful fish and should be kept with other non-aggressive species.
  • Avoid Fin Nippers: Avoid tank mates known for fin nipping, as this can cause stress and damage to the Green Fire Tetras’ delicate fins.

FAQs About Green Fire Tetras

  1. Q: How many Green Fire Tetras should I keep in my tank?
    A: Green Fire Tetras are schooling fish and should be kept in groups of at least 6-8 individuals. This helps reduce stress and provides a sense of security.
  2. Q: Can Green Fire Tetras be kept with other fish?
    A: Yes, Green Fire Tetras are generally peaceful and can be kept with other non-aggressive species. However, avoid tank mates known for fin nipping or aggression.
  3. Q: How often should I feed my Green Fire Tetras?
    A: Feed your Green Fire Tetras 1-2 times a day, offering small amounts of food that they can consume within a few minutes.


The Green Fire Tetra is a captivating fish that adds a vibrant splash of color to any aquarium. With its unique appearance, peaceful nature, and relatively easy care requirements, it’s an excellent choice for both beginner and experienced aquarists. By providing the proper care and creating a thriving habitat, you can ensure that your Green Fire Tetras thrive and bring joy to your aquarium for years to come.