Abstract: A system for communicating to a fisherman information relating to fish in water in the vicinity of a fishing lure or hook which is connected to a conventional non-electrically conducting fishing line and which includes a float attached to a conventional non-electrically conducting fishing line with the float being located at or below the water surface. The system also includes a sensor housed in the float for detecting a parameter relating to the fish, the sensor being housed in the float. Also housed in the float are an electronic card and a transmitter for wirelessly transmitting the signal. A power source housed in the float provides electrical energy to the sensor and transmitter. The system also includes a receiver for receiving the signal from the transmitter and a display or other output for presenting information relating to the signal to the fisherman.