Crossword Genius

Where lines meet fishes? (6)

Ross

I believe the answer is:

angles

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'fishes?' is the definition.
('angle' can be a synonym of 'fish')

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for angles that I've seen before include "Attempts to catch one from school" , "Space between two lines at a corner" , "They may be acute, obtuse or right" , "eg, Right, acute, obtuse" , "Fishes with hook and bait" .)

I've seen this clue in the Sydney Morning Herald.
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