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DistributionTropical and subtropical eastern North and South America, Africa, Asia, Kermadec Islands, and Hawaii. Adults with pelvic fins. Dorsal fins 2. The spinous dorsal with 10-12 slender spines; soft dorsal with 14-18 soft rays. Three short spines in anal fin; soft rays 13-16. Pectoral fin rays 20-24. Two low fleshy keels on each side of caudal peduncle. 30-32 vertebrae.