From FrugalReef

• Disposition: Peacefull
• Hardiness: Moderate
• Also Known As: Canary Fang Blenny, Yellow Canary Blenny, Green Canary Blenny, Fiji Canary Blenny
• Reef Safe: Yes
• Feeding: Omnivorous
• Size: Up to 4 inches
• Natural Range: Indo-Pacific

A canary blenny is a great addition to any reef tank. These fish almost never hide, opting instead to float head down in the water column looking for food. They are peaceful, but left alone even by aggressive tank mates due to their unusual defense mechanism.

The canary blenny is a "fang" blenny. They have 2 front, incisor like fangs they use to inject poison when attacked. This makes for painful bites, and aggravating the fish is to be avoided.