Rhynchopidae

Rhynchopidae is a family of ray-finned fish that comprises a single genus, Rhynchops. This genus contains two species, the African longfin escolar (R. acutus) and the American longfin escolar (R. flavicauda). These fish are characterized by their elongated, laterally compressed bodies, large eyes, and a distinctive, upturned mouth with a long, sickle-shaped upper jaw. Their coloration is typically silvery or bluish on the upper parts and paler on the underside, with a dark lateral line.

Rhynchopids are pelagic fish found in tropical and subtropical waters worldwide. They are often observed in large schools and are known for their swift swimming abilities. Their diet consists primarily of small fish and crustaceans, which they catch using their specialized mouths. The longfin escolar's unique jaw structure is thought to aid in capturing prey in open water.

Reproduction in Rhynchopidae is oviparous, with external fertilization. The eggs are pelagic and hatch into planktonic larvae. While not commercially important for food, these fish are sometimes caught as bycatch in fisheries targeting other species. Their ecological role involves contributing to the pelagic food web. The family Rhynchopidae is relatively small and has been the subject of ongoing taxonomic and ecological research.