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surgeonfish
(redirected from surgeonfishes)

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surgeonfish

 or tang

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Surgeonfish (Acanthurus leucosternon)
(credit: Jane Burton—Bruce Coleman Ltd.)
Any of about 75 species (family Acanthuridae) of thin, deep-bodied, tropical marine fishes that are small-scaled, with a single dorsal fin and one or more distinctive, sharp spines on either side of the tail base. The spines resemble a surgeon's scalpel and may be either fixed or hinged at the rear so that they can be opened outward and directed forward. Surgeonfishes are mostly algae eaters and usually do not exceed 20 in. (50 cm) long. The yellow surgeon, or yellow tang (Zebrasoma flavescens), is an Indo-Pacific species, and the blue tang (Acanthurus coeruleus) is found in the Atlantic and Caribbean.



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In Micronesia, however, herbivorous fishes, particularly surgeonfishes and unicorn-fishes (Acanthuridae) and parrotfishes (Scaridae) are equally important to local fisheries, and in many areas they have dominated the catch (Amesbury et al.
The development and regression of visceral fat stores preceding increases in ovary weight is a pattern that has been observed in other reef fishes, including tropical surgeonfishes (Acanthuridae: Fishelson et al.
 
 
 
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