There are many blennies available for saltwater aquariums. Most species are fantastic options for peaceful community saltwater fish tanks. However, some with more aggressive temperaments need to be monitored in a peaceful environment. Many species of blenny, such as the Starry Blenny, Tailspot Blenny, Bicolor Blenny, Lawnmower Blenny, and others perch on rockwork and graze on algae. Blennies come in a multitude of shapes, sizes, and colors, and I highly recommend you consider them for your saltwater fish tank.