Fish roe is either hard roe or soft roe. Hard roe, also known simply as fish roe, is fish eggs; whereas soft roe is milt.
Considered as one of the world’s finest seafood delicacies, authentic caviar is the processed salted roe of sturgeon and is the ultimate appetizer.
The term roe seldom refers to eggs harvested from species of fish other than the sturgeon, whereas the term caviar refers to salmon (red) caviar, herring, trout, pike, lumpfish or whitefish caviar.
Sturgeon caviar is just perfect with a glass of champagne on a special or celebratory occasion.