Onefin skate

The onefin skate (Gurgesiella dorsalifera) is a species of fish in the family Gurgesiellidae. It is endemic to Brazil. Its natural habitat is open seas, specifically on the bottom along the continental slope between 400 and 800 m deep. It is a bycatch of fishing boats targeting shrimp and Argentine squid (Illex argentinus), which has contributed to significant population declines among G. dorsalifera.