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Additional Records of the American Elephantfish Callorhinchus callorynchus (Chondrichthyes, Holocephali, Chimaeriformes) in Southeastern Brazil

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Document pages: 7 pages

Abstract: Chimaeras, fish in the order Chimaeriformes, are among therarest and least studied fish in the class Chondrichthyes (cartilaginous fish).Previous records have indicated that a species of chimaera known as the elephantfish, or cockfish, Callorhinchus callorynchus,may be found in marine waters off southeastern Brazil, as far north as thestate of São Paulo. Here we report that C. callorynchus,caught with bottom gillnet, was found inan urban fish market in the city of Rio de Janeiro (~23˚S). This and otherrecords from a variety of places call into question the distribution limits ofthe American elephantfish in the southwestern Atlantic Ocean and whether, atleast seasonally, this species may often be found as far north as the state ofRio de Janeiro. Because of scientific and conservation interests in the poorlyknown Chimaeriformes, we recommend long-term monitoring of the fish catch in ports along the southern Braziliancoast, to better understand the natural history of the intriguing chimeras.

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