A great Sailfin / Algae Blenny MAC Certified! Origin: Fiji Size info: Size L: approx. 3.5 - 4.75" There once was an Algae Blenny MAC certified, oh what a penny With a sailfin so grand It swam through the sand And ate algae, it's diet so trendy Keeping Sailfin / Algae Blenny in an Aquarium The Sailfin / Algae Blenny (Salarias fasciatus) is a popular and hardy fish that can be a great addition to a marine aquarium. With its bright colors and interesting behavior, the Sailfin Blenny is sure to be a favorite among hobbyists. Appearance The Sailfin / Algae Blenny is a small fish that typically grows to be around 4 inches in length. They are often pale green or gray, with a mottled pattern of dark spots and stripes. Their large sail-like dorsal fin is one of their most distinctive features. Behavior Sailfin Blennies are known for their playful and active behavior. They love to swim among the rocks, algae, and other decorations in the aquarium. They are also known for their love of algae and will graze on it all day long. Aquarium Requirements Sailfin / Algae Blennies do best in a well-established marine aquarium with plenty of rocks, caves, and other hiding places. They require an aquarium with plenty of live rock and a steady supply of algae to graze on. They also need a varied diet that includes vegetables, meaty foods, and algae supplements. Cool Stuff One of the coolest things about Sailfin / Algae Blennies is their unique swimming behavior. They swim with a "body wave" motion, which is different from most other fish. They also have a unique personality and will often interact with their human caretakers. Additionally, Sailfin Blennies are MAC certified, which means they are sustainably harvested and are not damaging to the environment.