2 in (6 cm)
Around 2 years.
3–35 ft (1–12 m)
Sailfin blennies get their name from the large dorsal fin that they can raise over their head like a sail. The fin is larger on males, who use it for territorial and courtship displays. Sailfin blennies live in holes in the reef and coral rubble; they feed on small plankton and invertebrates.
Many carnivores on the reef, including squid.
Did you know?
Sailfin blennies live in the small holes in rock, sand or rubble. They are often found occupying abandoned worm holes.