Golden Sailfin Blenny

Atrosalarias fuscus


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Golden Sailfin Blenny
Atrosalarias fuscus, also known as the Golden Sailfin Blenny, boasts a sleek, dark body that's both elegant and captivating. Easy to care for, it thrives in peaceful tank settings, adding a touch of sophistication with its unique look and charming demeanor.

Golden Sailfin Blenny

Atrosalarias fuscus


(0 Reviews)

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Golden Sailfin Blenny Care Facts

Care Level: Easy
Temperament: Peaceful
Diet: Omnivore
Reef Safe: Yes
Minimum Tank Size: 30 gallons
Max Size: 4 inches
The Golden Sailfin Blenny, Atrosalarias fuscus, has solid yellow or gold coloration, along with a noticeably long dorsal fin. They are hardy 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.
Blennnies are known for their incredible jumping abilities, so having a tightly secured lid is suggested. Diet should include a variety of spirulina, marine algae, seaweed and algae based foods 2-3 times daily. 


The Golden Sailfin Blenny (Atrosalarias fuscus), the Algae Blenny or Brown Coral Blenny, is a captivating addition to saltwater marine aquariums. This educational product description will provide comprehensive guidance for hobbyists interested in keeping this species, covering various aspects, including habitat, care requirements, compatibility, and more.

Habitat of the Golden Sailfin Blenny

The Golden Sailfin Blenny is commonly found in the Indo-Pacific region, inhabiting shallow coral reefs, rocky areas, and lagoons with ample algae growth. They seek shelter among coral branches and rocky crevices, where they graze on algae and find refuge from potential predators.

Reef Compatibility of the Golden Sailfin Blenny

This species is generally considered reef safe, primarily feeding on algae and posing no threat to coral or other invertebrates. However, caution should be exercised if keeping them with small ornamental crustaceans, as they may occasionally nip at their appendages.

Size and Lifespan of the Golden Sailfin Blenny

Golden Sailfin Blennies typically reach an adult size of around 4 inches (10 centimeters) in length and can live in captivity for up to 5 years or more with proper care.

Diet of the Golden Sailfin Blenny in Captivity

Golden Sailfin Blennies should be provided with a varied diet replicating their natural feeding habits, including algae-based flakes or pellets, supplemented with occasional feedings of live or frozen foods such as brine shrimp or mysis shrimp.

Aquaculture Availability of the Golden Sailfin Blenny

Golden Sailfin Blennies are less commonly aquacultured than other marine species but are occasionally available to hobbyists through reputable suppliers. It's essential to ensure specimens are obtained from sustainable sources to help preserve wild populations.

Compatibility of the Golden Sailfin Blenny with Other Fish and Invertebrates

Golden Sailfin Blennies are generally peaceful and can coexist with various tank mates, including small to medium-sized reef fish and invertebrates. However, they may exhibit territorial behavior towards conspecifics or similarly shaped species.

Sexual Dimorphism of the Golden Sailfin Blenny

Male and female Golden Sailfin Blennies typically exhibit similar coloration and morphology, making sexual dimorphism challenging to discern without close examination.

Juvenile to Adult Coloration Changes in the Golden Sailfin Blenny

Juvenile Golden Sailfin Blennies often display a darker brown or olive coloration with irregular markings, while adults develop a vibrant golden or yellow hue, especially on their fins.

Temperament of the Golden Sailfin Blenny

Golden Sailfin Blennies are known for their curious and active nature, darting in and out of hiding spots while foraging for food. They are generally peaceful towards tank mates but may exhibit territorial behavior in smaller tanks with limited space.

Tank Requirements for the Golden Sailfin Blenny

Minimum Aquarium Size: A tank size of at least 20 gallons is recommended to provide optimal care. The tank should feature ample live rock or artificial decorations to mimic their natural habitat and provide hiding spots.
Water Conditions:

  • pH: 8.1 - 8.4
  • Salinity: 1.020 - 1.025
  • Water Temperature: 72°F - 78°F (22°C - 26°C)
  • Water Flow: Moderate to high flow is preferred to simulate their natural environment and ensure proper oxygenation.

Other Common Names of the Golden Sailfin Blenny

Algae Blenny, Brown Coral Blenny

Five Compatible Tank Mates for the Golden Sailfin Blenny

    Why Purchase from Saltwaterfish.com

    Saltwaterfish.com is committed to providing ethically sourced marine specimens and supplies to hobbyists. Focusing on sustainability and customer satisfaction, they offer a wide selection of marine life, including Golden Sailfin Blennies, backed by their Live Arrival Guarantee and excellent customer service.

    In conclusion, the Golden Sailfin Blenny is a delightful addition to saltwater aquariums, offering aesthetic appeal and functional benefits as an algae eater. With proper care and attention to their specific needs, hobbyists can enjoy the beauty and charm of this species in their home aquariums for years to come.

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