Information concerning fish species that prey on ctenophores and other gelatinous plankters is presented for the first time from Argentine coastal waters (34–47 °S). Stomachs from 25029 individuals of 69 fish species were analyzed. At least 5% of the

An updated checklist of medusae and ctenophores is presented for the first time for the area comprised by the Bahía Blanca Estuary, the adjacent shelf El Rincón and Monte Hermoso beach, on the southwest coast of Buenos Aires province (Argentina). The

A new final fish host ( Stromateus brasiliensis ) for the digenean parasite Monascus filiformis from the continental shelf of Patagonia Argentina in the South-western Atlantic Ocean is reported. This demersal-pelagic fish (commonly denominated pampanito)

The genus Mnemiopsis is comprised of a single species, Mnemiopsis leidyi A. Agassiz, 1865, that has recently made the transition from a distribu-tion limited to the Atlantic coasts of North and South America to an invasive range that includes the Black,