Fish ID+™

Settings: Off, On; Default = On

Fish ID+™ uses advanced signal processing to interpret sonar returns and will display a Fish Symbol when very selective requirements are met. When a fish is detected, a fish icon and its depth are displayed above the return that has been classified as being a fish. Three different fish size icons represent the intensity of the sonar return and provide an indicator of relative fish size.

Narrow Beam

Wide Beam

Shaded Fish Symbols

Hollow Fish Symbols

•In Single Beam models (550, 560), targets detected in the 200 kHz beam are represented as shaded fish symbols.

•In DualBeam PLUS™ models (561, 570), targets detected in the 200 kHz narrow beam are represented as shaded fish symbols, and targets detected in the 83 kHz wide beam are represented as hollow fish symbols.

•In Down Imaging™ models (561 DI, 570 DI, 571 HD DI), targets detected in the 455 kHz conical beam are represented as hollow fish symbols, and targets detected in the 200 kHz conical beam are represented as shaded fish symbols.

When Fish ID+™ is turned off, the Fishfinder shows only the raw sonar returns on the display. These returns will often result in “arches“ forming on the display, indicating potential targets. Due to the transducer beam angle, the distance to a fish decreases as the fish moves into the beam, and then increases as it moves out again, creating a Fish Arch when this distance change is shown on the display. Boat speed, chart speed, and the position of the fish within the sonar beam greatly affect the shape of the arch.

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Sonar Menu Tab