Firefish Helfrichi - South Pacific

Nemateleotris lavandula


(0 Reviews)

Firefish Helfrichi - South Pacific

Firefish Helfrichi - South Pacific

Nemateleotris lavandula


(0 Reviews)

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Firefish Helfrichi - South Pacific Care Facts

Care Level: Moderate
Temperament: Peaceful
Diet: Carnivore
Reef Safe: Yes
Minimum Tank Size: 20 gallons
Max Size: 4 inches
The The Hawaii Helfrichi Firefish, Nemateleotris helfrichi, has a bright yellow face fading into a brilliant purple then fading into a pearly white. They are hardy and very peaceful and can be housed with other peaceful fish in a reef tank setting, but may become territorial towards other blennies, gobies or dartfish in smaller tanks.

Gobies tend to stay mainly towards the bottom of the tank, burrowing and sifting through the sand. However, this goby is also a known jumper, so a tight fitting lid is suggested. Diet should include a variety of frozen or live mysis shrimp and vitamin enriched brine shrimp 1-2 times daily. 


Exploring the Firefish Helfrichi (Nemateleotris lavandula): A Jewel in Your Marine Aquarium

The Firefish Helfrichi, scientifically known as Nemateleotris lavandula, is a captivating and popular addition to saltwater marine aquariums, appreciated for its vibrant colors and intriguing behavior. This species hails from the Indo-Pacific region, specifically in the waters around Indonesia and the Philippines.

Habitat: Creating a Home for Firefish Helfrichi

In the wild, Firefish Helfrichi inhabits coral reefs and rocky areas with plenty of hiding spots. Its preference for sheltered spaces is essential when creating a suitable environment in captivity.

Reef Safety: A Harmonious Coexistence

The Firefish Helfrichi is generally considered reef-safe. It tends to stay within the confines of the rockwork and does not show a propensity for harming coral or other invertebrates.

Size and Lifespan: Modest Dimensions and Longevity

This species has a modest size, reaching an adult length of around 3 inches. With proper care, Firefish Helfrichi can live up to 5 years in a well-maintained aquarium.

Diet in Captivity: Culinary Preferences of Firefish Helfrichi

Firefish Helfrichi is an omnivore, accepting a variety of foods. A diet of high-quality marine pellets, frozen mysis shrimp, and brine shrimp will help maintain its health and vibrant coloration.

Aquaculture and Availability: Sourcing Quality Specimens

While less commonly aquacultured than some other species, Firefish Helfrichi is occasionally available to hobbyists. Purchasing from reputable sources like Saltwaterfish.com ensures the health and well-being of the fish.

Compatibility: Peaceful Coexistence in Community Tanks

This species exhibits peaceful behavior, making it a suitable addition to community aquariums. However, caution should be exercised when selecting tankmates to prevent aggression from more dominant species.

Sexual Dimorphism: Unlocking the Gender Mystery

Firefish Helfrichi does not display significant sexual dimorphism, making it challenging to differentiate between males and females based on physical characteristics.

Juvenile to Adult Coloration Changes: A Visual Transformation

Juveniles typically have a more subdued coloration, with a yellowish-brown body and a hint of purple. As they mature, the vibrant purple color becomes more pronounced, creating a visually striking appearance.

Temperament: The Peaceful Nature of Firefish Helfrichi

Known for their peaceful demeanor, Firefish Helfrichi tends to stay near their hiding spots, making them an excellent choice for reef enthusiasts seeking visually appealing and undemanding fish.

Tank Requirements: Crafting a Comfortable Habitat

  • Minimum Aquarium Size: A tank with a capacity of at least 30 gallons is recommended to provide ample space and accommodate the fish's territorial nature.
  • Water Conditions:
    • pH: Maintain a stable pH level between 8.1 and 8.4.
    • Salinity: Keep the salinity in the range of 1.023 to 1.025.
    • Water Temperature: Maintain a temperature between 72°F and 78°F.
    • Water Flow: Moderate water flow is ideal, mimicking the natural conditions of their native habitat.

Other Common Names: Variations in Nomenclature

Apart from Firefish Helfrichi, this species may also be known as Helfrich's Dartfish.

Five Compatible Tank Mates: Building a Harmonious Community

  • Banggai Cardinalfish (Pterapogon kauderni): Shares a similar peaceful temperament.
  • Royal Gramma (Gramma loreto): A colorful and non-aggressive companion.
  • Purple Firefish (Nemateleotris decora): Compatible due to similar behavior and habitat preferences.
  • Tailspot Blenny (Ecsenius stigmatura): Adds diversity to the tank without posing a threat.
  • Clownfish (Amphiprion spp.): Generally get along well with Firefish Helfrichi and add a dynamic aspect to the aquarium.

Why Choose Saltwaterfish.com: Ensuring Quality and Expertise

When selecting your Firefish Helfrichi, Saltwaterfish.com stands out for its commitment to providing healthy and sustainably sourced marine life. With a reputation for excellence, they ensure that every fish undergoes rigorous quarantine procedures, reducing the risk of introducing diseases to your aquarium. Trust Saltwaterfish.com for a reliable source of Firefish Helfrichi and various other marine species to enhance your saltwater aquarium.

Beautiful fish


Reviewed by: Greg Kelso on June 19, 2024

Excellent in every way.


Reviewed by: James Trevino68 on April 22, 2024


Reviewed by: Joshua Staats on March 3, 2024

Amazingly healthy fish. It was eating immediately.


Reviewed by: Sean Boyer on Feb. 18, 2024


Reviewed by: Louis Cannon Jr. on Dec. 25, 2023

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