BT Pes 24a(42) :
See the entire entry for pwṭy n.f. small fish or reptile

BT Pes 24a(42) :אכל פוטיתא לוקה ארבעה‏ : who eats p' deserves 4 lashes
See the entire entry for pwṭy#2 n.m. a small eel-like fish