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The Perciformes, also called the Percomorphi or Acanthopteri, is the largest order of vertebrates containing about 40% of all bony fish. Perciformes means perch-like. They belong to the ray-finned fish and comprise over 7000 species found in almost all aquatic environments. They are also the most variably sized order of vertebrates, ranging from the 7 mm Schindleria brevipinguis to the 5 m Makaira species.
Perciformes are easy to recognize. The dorsal and anal fins are divided into anterior spiny and posterior soft-rayed portions, which may be partially or completely separated. The pelvic fins usually have one spine and up to five soft rays, positioned unusually far forward under the chin or under the belly. Scales are usually ctenoid, although sometimes they are cycloid or otherwise modified.
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