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October 24: Arrival of New Fresh Water Fish.

October 24: Arrival of New Marine Water Fish.


Included colors

Dusky-Black Blenny

Dusky-Black Blenny

Scientific Name: Astrosalarias fuscus

Price: Upon Request

Origin: Java, Maldives, Vanuatu

Family: Blenniidae




Technical Info

Temperature: 22 - 25 ℃

pH: 8.1 - 8.4

GH: 8 - 12

SG: 1.020 - 1.025

Max size: 10 cm

Min Tank size: 100 Ltr

Position in Aqua: Bottom swimmer



The Black Sailfin Blenny is prized for its voracious appetite for nuisance microalgae. But the Black Sailfin Blenny is most recognizable for its stark black coloration on both body and fins. Since the Black Sailfin Blenny eagerly perches upon live rock to feed, Atrosalarias fuscus truly creates an eye-catching addition to any saltwater reef system.



Native to the reefs of Java, the Black Sailfin Blenny requires ample live rock with microalgae growth on which it can forage for food. This member of the Blenniidae family is an obligate microalgae eater, which means it needs microalgae in its diet in order to survive. However, its diet can be supplemented with vegetable matter, including frozen and dried foods containing marine and blue-green algae (spirulina).



Captive breeding success is unreported.


Compatible with

These are by nature territorial fishes, that will drive out other animals, including of their own kind, from their algal patch area... how to put this.... with extreme prejudice. Algae eating tangs like Ctenochaetus, many Zebrasoma, small Rabbitfishes/Spinefoots... sessile invertebrates that make their living rasping the bottom, may have a tough go at living in the same small space as these blennies. If you would like to try mixing them, do place the blenny last.



Males are generally larger than females and experience a succession of color changes when breeding.