Automatic recording of fish heart rate on a personal computer
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From acoustic tags operated into fish in a closed system, the heartbeat signals are sent via underwater telemetry and counted on a personal computer. The computer removes false pulses caused by noise, and calculates the heart rate for one minute based on reliable heartbeats. Up to 6 fish can be monitored in a sequence of one minute per fish. The heart rate is stored on a file, or transferred to another computer.