Source : Webster's Revised Unabridged Dictionary (1913)

Piscatorial \Pis`ca*to"ri*al\, Piscatory \Pis"ca*to*ry\, a. [L.
   piscatorius, fr. piscator a fisherman, fr. piscari to fish,
   fr. piscis a fish. See {Fish} the animal.]
   Of or pertaining to fishes or fishing. --Addison.

Source : WordNet®

piscatorial
     adj : relating to or characteristic of the activity of fishing; "a
           piscatory life" [syn: {piscatory}]