High Quality Content by WIKIPEDIA articles! Wrigglers are perciform fishes in the family Xenisthmidae. They are native to the Indian and Pacific oceans, where they are mostly reef-dwelling. The species is predatory and is known to be a minor threat to humans. 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. They first appeared and diversified in the Late Cretaceous.

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