R. Uzziel on Selling Non-Kosher Foods (22 Iyar)

שו"ת משפטי עוזיאל ב:טו 22 Iyar, 5699 (1939)

Since Jews cannot sell non-kosher items, how do fishermen deal with the non-kosher fish they catch? Especially if they need to process that fish, since they can't sell it right away.