Crossword Genius

Mean to eat mostly raw fish (8)

Ross

I believe the answer is:

stingray

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'fish' is the definition.
(type of fish)

I don't understand the rest of the clue.

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(Other definitions for stingray that I've seen before include "swimmer" , "Marine creature with venomous tail" , "Large fish with tail spine" , "Large venomous fish -- it's angry (anag)" , "TV show" .)

I've seen this clue in The Sun and The Telegraph.
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