Whether you’re a fisherman or a scientist one of the most simple and common questions while out on the water is: Where are the fish? Well, in order to answer that we need to understand fish movement patterns along with the how, when and why fish will be in a given area. In this 2-part post I will discuss tracking fish movement with PIT tags & passive antenna systems and my experience applying this technology across environmental extremes to both the Everglades marsh and arctic tundra river systems.
Recent technological advances have seen a boom in different movement tracking devices available to fisheries scientists. Acoustics, radio telemetry, and satellite tags have provided a wealth of previously unattainable information but have species specific size restrictions and are often too expensive for the budget of many researchers. In these cases, PIT tags and their associated passive antenna systems provide a cost effective way for the researcher to study the movements and habitat use of fish both large and small.