Crossword Genius

Fish in shallow waters (6)

Ross

I believe the answer is:

shoals

I'm a little stuck... Click here to teach me more about this clue!

This could be a double definition.

'fish in shallow' is the first definition.
'shoals' can be an answer for 'shallow' (thesaurus). I am not sure about the 'fish in' bit.

'waters' is the second definition.
(shoal is a kind of water)

Can you help me to learn more?

(Other definitions for shoals that I've seen before include "Masses of fishes swimming together" , "Large groups of fish" .)

I've seen this clue in The Globe and Mail.
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