The Four Striped Damselfish are also called as Blacktail Dascyllus, Blacktail Damselfish, or Blacktail Humbug.   These saltwater fish can be found in the Indo-Australian Archipelago and western Caroline Islands including Indonesia, Philippines, New Guinea, and the northern Great Barrier reef of Australia. The are found at depths down to 33 feet.   They are common in sheltered lagoons, harbors and inlets but may also be seen out in the open with outcrops of isolated coral heads. Usually,