Nomeidae

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Nomeidae (driftfish, man-of-war fish; subclass Actinopterygii, order Perciformes) A small family of marine fish (sometimes included in the Stromateidae) that have oval bodies, large eyes, two separate dorsal fins, and forked tail fins. Species such as Nomeus gronovius (man-of-war fish) and Psenes arafurensis (eyebrow fish) are sometimes found swimming among the tentacles of Physalia physalis (Portuguese man-of-war, See RHIZOPHYSALIINA). There are about 15 species, found in tropical and subtropical seas.