Blue Tang is a high-bodied, compressed, pancake-shaped fish with a pointed snout and small scales. The eye is located high on the head and the mouth is small and low on the head. The dorsal fin is continuous. Of particular interest is the distinct yellow caudal spine located at the base of the tail on either side of the body, a characteristic shared with other surgeonfish. This spine fits into a horizontal groove and can be extended and used to fend off aggressive encounters.
 

Blue Tang requires a 70 gallon or larger aquarium with a number of hiding places and plenty of room to swim. It is tolerant of other tangs, but can occasionally be aggressive towards other Blue Tangs. If housing in groups, introduce all at once into a larger aquarium. It is more susceptible to lateral line disease, fin erosion, ich and other skin parasites than many other fish.

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