The Fang Blenny, is commonly referred to as the Forktail Blenny, Lyretail Fang Blenny or Yellowtail Fang Blenny. It is named appropriately since its caudal fin resembles a fork, with two long exterior spines and 5 shorter middle spines. With pale blue body and bluish-yellow tail, the Fang Blenny makes a captivating addition to any tank. Males are larger than females and experience a succession of color changes when breeding. The Fang Blenny grows up to 5 inches and needs a tank not less than 30 gallons. It requires live rock for hunting and grazing, is best to keep only one per tank unless a breeding pair is maintained. Since the Fang Blenny is venomous, we suggest you to handle it with some precaution, as it can inflict painful wound. It should be given a diet of finely chopped crustacean flesh, mysid and vitamin-enriched brine shrimp, as well as frozen herbivore preparations. The Fang Blenny is very much considered reef safe and can be a good tank inhabitant of reef tank. It thrives well in a temperature range of 72-78 degrees Fahrenheit and pH of 8.1-8.4. The Fang Blenny requires moderate care and is semi-aggressive in nature. It features venomous fang on each side of the lower jar, which are used for defense. The Fang Blenny is a solitary species that is usually seen hovering above the bottom feeding on zooplankton. It also feeds on benthic invertebrates.