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NMT offers two styles of fish counters which are independent of other tagging systems or AutoFish. The Individual Fish Counter is intended for use with small fish which are individually handled and typically anesthetized, during operations such as manual fin clipping or vaccination. The Adult Fish Counter is used for counting larger fish traveling through a fishway.

These counting systems are rugged and simple to operate. They both provide multiple batches and target count alarms. The Adult fish Counter further provides throughput and temperature graphs and distinguishes jacks from adults when used with salmon.

  • Individual Fish Counter
  • Adult Fish Counter

Individual Fish Counter

main control system

Main Control System

The system is designed for counting fish when they are being processed by hand, such as for fin clipping or vaccinating. The counter will accommodate fish as small as 0.5 grams.

The counter consists of a Main Control System (below) and up to 12 Individual Counting Stations. The fish are placed individually into the Counting Station funnels (above) and sensors detect passing fish. The Control System tallies the individual counts per station and the total count. In addition, the operator can set a total count that will trip an alarm when reached. This feature will be particularly useful for populating ponds.

The Control System can be used free standing or wall mounted. The Individual Counting Stations can be integrated into most fish handling equipment.


Main Control System


Individual Counting Stations


Monthly Rental of Main Control with 4 Stations


Fish being placed into the Individual Counting Station funnel

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Adult Fish Counter

The Adult Fish Counter is designed to be installed in fishways and ladders to provide real time counts of fish migrating upstream or entering a hatchery.

The Adult Fish Counter includes a control box and a sensor unit that is installed underwater within the fish channel. The system accounts for fish passing upstream or downstream through the sensors. 

This first model of the Adult Fish Counter was developed for salmonids, and tallies adults and jacks separately, based on height. It graphs and displays the number of fish passing on an hourly, daily, and 30-day basis (example screens, below) and tracks temperature. It can be programmed to send a "Target Reached" signal to an existing alarm system or another available indicator to let the operator know when a target number of fish have passed the sensor.

screen shot 1 screen shot 2 screen shot 3


Sensors   Main Console


Adult Fish Counter



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