Manual for VAKI Micro/Macro
1 Preface – The Micro/Macro Fish Counters
VAKI Aquaculture Systems thank you for choosing the MICRO and MACRO range of fry and smolt
counters.
These counters are used in many aquaculture enterprises where an accurate knowledge of fish
numbers is important. Applications include counting fish when grading, accurate stock control and
when transferring fish between tanks and delivering fish by helicopter, well boat and truck.
The MICRO and MACRO counters have been developed in collaboration with a number of
leading fish farming companies and used worldwide for counting a wide variety of species including
Atlantic and Pacific salmon, trout, char, sea bass, sea bream, cod, tilapia, cobia, yellowtail, flatfish
and most other farmed fin fish species.
Vaki continue to develop the features and functions of the counters for use with more
specialised species including prawn, shrimp, eel and ornamental fish.
The counters are based on a digital scanning camera and computer vision. The outlines of
objects that pass beneath the camera are recorded and custom designed software is used to
analyse the images and count the individual fish.
The fish enter the counter and the water from the fish pump or spray bar then carry the fish
over the curved counting channel. The fish then pass over a light source and a mirror above the light
reflects the images of each fish back to the digital camera where the outlines are recorded and
counted.
The MICRO is ideal when counting small fish from 0.2 g and has a 500mm wide counting
channel, the MACRO channel is 1000mm wide and ideal for counting both fry and larger fish such as
smolts. Both counters can be supplied with multi counting channels, which can be used to count
separate batches of fish simultaneously, for example when grading.
This manual is a guide to the use of the MICRO and MACRO counters.
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