Global Fish Finder Market Size, Share & Demand Report By Product Type (Standalone Fish Finders, Fish Finder + GPS Chartplotter Combos, Portable / Castable Fish Finders, Multifunction Marine Display Fish Finders), By Sonar Technology (Traditional 2D Sonar, CHIRP Sonar, Down Imaging / DownScan Sonar, Side Imaging / SideScan Sonar, 3D and Live Sonar Systems), By Application (Recreational Fishing, Commercial Fishing, Marine Research & Oceanographic Studies, Government Fisheries Monitoring), By Distribution Channel (Marine Equipment Dealers, Online Retail, Specialty Fishing Stores, OEM Boat Manufacturers) By Region & Segment Forecasts, 2026–2031