These days, however, many chefs substitute the crab roe with Japanese flying fish roe or tobiko.

然而近来，许多厨师用日本飞鱼肉或飞鱼子替代蟹黄。

youdao

Roger wondered what else he could transform into fish roe.

罗杰想知道他还能把什么东西转换进鱼卵里去。

youdao

Seafood: cuttlefish, squid, shrimp roe, crab roe, fish roe, fish head, etc.

海产类：墨鱼鱿鱼虾膏蟹黄鱼子鱼头等。

youdao

Not to mention vats of rainbow-hued fish roe, dense black loaves stuffed with shoals of tiny fish, and the famous Finnish apple pie.

BBC: Postcard from Helsinki, Finland

Psilakis' presentation was accompanied by typical Cretan hors d'oeuvres: spreads made of eggplant and fish roe, lots of raw vegetables and olives, and tiny, lightly fried cheese turnovers called kallitsounias.

NPR: Crete: Ancient Diet with Modern Message

By the 1800s Russian aristocrats took to carting live sturgeon with them when they traveled, so the fish could be sliced open and their roe salted and served fresh.

FORBES: Caviar Emptor