Electropositive shark repellent Atlantic longlining vessels in 2008. As expected, teleosts (bony fish) are not repelled by the electropositive metal’s cation liberation in seawater. This is because teleosts lack the ampullae of Lorenzini. Teleost response was confirmed using captive Cobia ("Rachycentron canadum") and Pacific halibut ("Hippoglossus stenolepis"). In July 2008 swordfish ("Xiphias gladius") catch was reported on experimental hooks treated with electropositive metal. As with all shark repellents, 100% effectiveness will not be achieved with electropositive metals. The metals are particularly effective when the shark is relying on its electrosense. It is likely that electropositive metals are ineffective for deliberately stimulated (chummed) sharks,
Permit (fish) Permit (fish) The permit ("Trachinotus falcatus") is a game fish of the western Atlantic Ocean belonging to the family Carangidae. Adults feed on crabs, shrimp, and smaller fish. The permit was first described by the "father of taxonomy", Carl Linnaeus in his tenth edition of the work "Systema Naturae", which was published in 1758. He originally classified it as "Labrus falcatus", though the fish has since been placed in the genus "Trachinotus". The permit's genus name, "Trachinotus" comes from a fusion of the Greek words ' (), which means "rough", and ' (), meaning "back". The species name for the