: Any request for money—often accompanied by a tragic backstory—is a definitive indicator of a scam. eSafety Commissioner

Catfish, specifically blues and channels, often school incredibly tight in massive balls. When you pass a school of 500 catfish with a standard 2D sonar, the screen doesn't show individual "arches" like it would for bass. Instead, it looks like a chaotic blob of purple, red, and yellow near the bottom.

Best Budget Option Lowrance pioneered DownScan Overlay, which blends traditional 2D sonar with Down Imaging onto one screen. This is perfect for identifying a channel cat sitting on a rock pile.