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,
Madonna with the Fish his fish was an early type of baptism. Raphael leading Tobias always expresses protection, and especially protection to the young. The picture is believed to have been painted around 1512-14 to commemorate the introduction of Book of Tobit to the canonical books of the Roman Catholic Church. St. Jerome translated the Book of Tobit into Latin, which explains his presence on the right of Mary. It is currently held by the Museo del Prado, Madrid. Madonna with the Fish Madonna of the Fish, known also as Madonna with the Fish is a painting by the High Renaissance master Raphael. Mary