ACTH is a segment of a much larger glycoprotein prohormone molecule called proopiomelanocortin (POMC). POMC is synthesized by the corticotrophs of the anterior pituitary, which constitute about 10 percent of the gland.
Caviar harvested from an older fish is the more rare, and more sought after, white caviar. The Beluga sturgeon are primarily found in the Caspian Sea, which is surrounded by Iran, Azerbaijan, Russia, Kazakhstan and Turkmenistan. The other primary source of Beluga sturgeon is the Black Sea near Russia and Romania.
Tobiko Caviar. Tobiko is more commonly known as flying fish roe and it originally came from the waters off the coast of Iceland. It has become quite the sensation recently, as it is used on many Sushi dishes to enhance the flavor. One of the more popular of the Tobiko-sushi dishes is Tobiko Capelin Wasabi.