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Pempheridae (sweeper, bullseye; subclass Actinopterygii, order Perciformes) A family of marine fish that have a fairly deep body, a short dorsal fin, a long-based anal fin, and large eyes. They are mostly schooling, shallow-water species found near caves, rock ledges, etc., and are well known to divers. Most species have an orange-red colour. There are about 20 species, distributed world-wide.