"Tiny whitefish roe with characteristically crunchy texture, golden or lightly spiced with wasabi (both $7 an ounce), are both suitable to scatter on tomato slices instead of sea salt," Florence Fabricant NY Times

Whitefish are closely related to salmon, though there are many species of salt and fresh water fish commonly described as whitefish.

Whitefish is an extremely mild form of caviar that has a crunch and size like tobiko (flying fish roe.)
Delicious on blini along with other caviar, this is also a good option to use in dishes calling for caviar.