Fish Conservation

Data from small transponder tags can be used to study the movement of fish, teaching us about migration, habitat use, and population health. These tiny transponders, sometimes smaller than a grain of rice, are shining a light on the hidden lives of fish and improving our ability to conserve their habitat.

Before we knew how to measure it, few could imagine how widely diverse genetic information is within a species, or that it is the key to their survival. We have six conservation genetics labs across the country to help us better understand species relationships, gene flow among populations, and the geographic and biological boundaries between populations. This research ensures that we are making informed conservation decisions to protect America’s fish and aquatic resources.

Environmental DNA (eDNA) sampling is a new technology that could give us the ability to tell what species are present in a river or lake just by sampling the water. Currently, eDNA is used to monitor for the genetic presence of bigheadand silver carp, two species of invasive carp. By sampling waters that could potentially be invaded by these species, the detection of their DNA can indicate the potential presence of the fish itself.

We develop cryopreservation techniques for imperiled species to support fisheries operations at our facilities and those of our partners. We are also working on developing cryopreservation techniques for freshwater mussel and amphibian species. Cryopreservation helps preserve and increase genetic diversity of both hatchery raised and wild fish populations.

Getting fish past dams, under highways, or around irrigation systems is no easy task. It requires a blend of biology, engineering, and hydrology to build a passage that fish will swim through. New specialized research facilities at the Bozeman Fish Technology Center are helping researchers develop engineering design criteria to ensure the fish have a smooth ride.