Definition of "piscator"

...this was Lady Allerton, no longer the artful Miss Aubrey, who drew away poor Mary Granard's lover, but the imperious wife, who had long since taught her cautious, suspicious husband that he had been angled for by a skilful piscator, and secured by tackle the law alone could break.

1838 (date written), L[etitia] E[lizabeth] L[andon], “(please specify the page)”, in Lady Anne Granard; or, Keeping up Appearances. […], volume I, London: Henry Colburn, […], published 1842, pages 246–247

The canes themselves tower up, many of them, for more than thirty feet in height, and are at the lower joints as thick as a man's arm, though millions of lesser growth are there, to furnish fishing-poles for all the piscators alive.

1865, John William Carleton, editor, The Sporting Review

On the other hand, the sundry species (and these represent the majority) which will take a 'personal vanity' fly always move in shoals, and a little observation will show the piscators that they bite for two reasons only […]

1896, The Fishing Gazette