Black Sailfin Blenny

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  • $25.00

  • Note: In-store prices on livestock may vary from our website.

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Scientific Name: Atrosalarias fuscus

Family: Blennidae

Origin: Fiji, Maldives, Vanuatu, Java


Quick Facts

  • Care Level: Moderate
  • Temperament: Peaceful
  • Lifespan: 2-4 years, possibly longer
  • Reef Compatible: Yes
  • Water Conditions: 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.020-1.025
  • Maximum Size: 4"
  • Diet: Herbivore
  • Minimum Tank Size: 30 gallons


The Black Sailfin Blenny, also sometimes called the Dusky Blenny, gets its name from its jet black coloration both on the body and the fins and its large dorsal fin. It's stark contrast to most more colorful fish makes it a beautiful addition to any tank. 

It requires live rock with microalgae to perch on and feed off of. It should also be supplemented with herbivorous preparations that include marine algae and spirulina. It will also hide within the live rock and should have caves and crevices to feel secure. It is peaceful towards other similar sized fish but will be territorial towards its own kind.