Are Lamprey Eels Poisonous?

The mucus and serum of several lamprey species, including the caspian lamprey (Caspiomyzon wagneri), river lampreys (Lampetra fluviatilis and L. planeri), and sea lamprey (Petromyzon marinus), are known to be toxic, and require thorough cleaning before cooking and consumption. Do lampreys still exist? Sea lampreys (Petromyzon marinus) are parasitic fish native to the Atlantic Ocean. … Read more