“Rashi explains that since the first fisherman has already set his sights on those particular fish and is planning on catching them, they are already considered to be set aside for him”
In שנים אוחזים בטלית the Gemara talks about falling on an object and someone else takes it away from him the guy that took it away gets it because the first guy wants to be קונה with falling on it (so ד אמות doesn’t work) why can’t you say over here it’s not his until he catches it
Just wondering not arguing