As I mentioned before bait balls show up as clouds or dark spots on the screen where individual fish show up as a dot, line or dark spot depending on how big the fish is. very seldom do they show up as an arch. The pixel counts just wont allow it and still keep the scale in perspective. I also have an X-15 paper graph which is known for its ability to show great detail but it also does'nt show every fish as an arch. I would'nt get too hung up on trying to see every fish. Over 90% of the fish I've hooked never even showed up on on the sounders as they were outside the cone. I Mostly use mine to find bottom or the depth at where the majority of the bait is.