Denominative from dag; to fish -- fish.
see HEBREW dag
H1770. dig
[דִּיג דוג,] verb denominative fish for, catch —
Qal Perfect3masculine plural suffix וְדִיגוּם consecutive Jeremiah 16:16 (but as
Qal dubious Ges§ 73. 2; Sta§ 160 b. 2 regards as
Hiph`il (abbreviated ), NöZMG. 1883, 540 conjecture Pi`el)