Of the Poisson surgeons comprises 81 species divided into three S and six S. the vernacular name of the family derives from these appendices in sharp-edged spines (of the Greek : ακάνθουρος , acanthus ). When a danger threatens, they do not hesitate to give of violent one blows of tail in direction of this one. The species of the family are identified by the number of thorny and soft rays in their fins and the number and the mobility of the pre-caudal spines. They in general live in the coral barriers of the tropical seas. They are for the majority of size lower than 30 cm but the Naso annulatus can reach one meter. The family at summer described in 1810 by the naturalist Constantine Samuel Rafinesque.

Aquariophilie

The fish of this family are very snuffed aquarists. It is however necessary to pay attention to the rapid growth of certain species which must be thus anticipated. Certain species become aggressive (territoriality), even poisons.

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