Black Sailfin Blenny grow to four inches and behave like most salt water gobies. The distinguishing feature is the high dorsal fin.

Scientific Name: Atrosalarias fuscus

Max Size: 4"

Diet:  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).

requires 30+ gallon tank

These fish have a tendency to nip at clam mantels and corals. they can also be territorial.

Small: 1" to 2"

Medium: 2" to 3"