Crossword Genius

Fish whose egg casings are called "mermaid's purses" (5)

Ross

I believe the answer is:

skate

(Other definitions for skate that I've seen before include "Glide on ice; ray" , "Lasso" , "Type of ray" , "Glide like large fish" , "Ice --; roller --" .)

I've seen this clue in The New York Times.
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