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The rabbitfishes look much like surgeonfish or Moorish idols, although with the exception of the foxface (Siganus volpinus) and the coral rabbitfish (S. corallinus), not as brightly colored. They have no "scalpels," but they do have a strong venom in the short spines of their fins, and should not be handled.

Tuna and Mackerels. Although one or two members of the family Scombridae patrol reefs—particularly the dogtooth tuna (Gymnosarda unicolor)— most are true pelagics, living in the open sea, and will only occasionally be seen on the outer reef edge. When traveling by boat between islands or to offshore dive sites it is not unusual to see big schools of tuna splashing at the surface, often with attendant flocks of seabirds overhead. These schools are usually composed of slapjack tuna, although there are several other species found in Indonesia.

A school of pyramid butterfly-fishes, Hemitaurichthys polylepsis. These plankton feeders gather in large groups around the lip of drop-off reefs in eastern Indonesia. The Bunaken group, Sulawesi,