Brilliant colors, nonstop swimming, graceful disk-shaped bodies, and a razor-sharp defensive spine make surgeonfish some of the most recognizable animals on coral reefs—and some of the most desirable fish in large saltwater aquariums. The family Acanthuridae includes the fishes aquarists commonly call tangs, surgeonfish, bristletooth tangs, and unicornfish. Familiar members include the bright Yellow Tang, …
