The Hummingbird Fish Finder PiranhaMax 230 Portable is one of the most appreciated fish finders in the PiranhaMax series, due to its excellent price/quality ratio. Although it's equipped only with a black and white screen, 4-inches in diagonal with a pixel resolution of 160V x 132H, it's a very flexible unit, and that's why many anglers choose it over the other … [Read more...] about Hummingbird Fish Finder PiranhaMax 230 Portable Review