Families Stromateidae, Centrolophidae, Nomeidae, Ariommidae, Amarsipidae, and Tetragonuridae Eocene to present; slender to ovate, deep-bodied fishes; dorsal fin continuous or spinous portion set off from soft portion by deep notch; in the most generalized species, which resemble Kyphosidae, the soft dorsal is preceded by about 6 low,
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