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What is Fisheries Biology?

Mary McMahon
Updated May 21, 2024
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Fisheries biology is a scientific discipline which is focused on the study of fisheries. Fisheries are fish populations which are used for commercial value, and they include saltwater fisheries, freshwater fisheries, and fish farms in both salt and freshwater. Degrees in fisheries biology are offered at fairly few colleges and universities around the world, with both undergraduate and graduate degrees available. Many degree-granting institutions are located relatively close to the ocean for the purpose of fieldwork.

A fishery is a delicate system. Fisheries biologists study fish habitats and fish populations, learning about the natural conditions which fish live in and then extending their knowledge to determine how a fishery can be used sustainably. In many fisheries, it is not uncommon to have multiple species of commercial value, all of which must be treated very differently. Fisheries are also interconnected, with things like agriculture and other practices on land having a direct impact on fishery health.

One common employer of specialists in fisheries biology is fish and game agencies. These government agencies have a dual goal of protecting natural resources and making natural resources available to people and companies which wish to use them. Fish and game representatives do things like issuing fishing licenses, inspecting the catch on fishing boats to confirm that all of the species are legal, conducting long term studies about wild animal populations, and inspecting fish farms to confirm that they are being operated in a responsible manner.

Conservation organizations also use experts in fisheries biology to study fish populations and make policy recommendations. Many fisheries around the world are critically overfished, making the development of new policy very important. Fisheries biologists may engage in fieldwork for months and years while they study fish populations and develop a plan to help a population revive without excessively limiting the fishing industry. Fisheries biologists are very concerned about protecting productive and delicate ecosystems, and may engage in a variety of techniques from promoting the cause of endangered fish to studying fish in the lab to protect the natural environment.

Fish farms also use fisheries biologists to manage their populations. The biologist makes sure that the habitat is suitable, monitors population numbers, looks out for signs of diseases, and manages the program as a whole to keep the fish farm safe, productive, and as environmentally friendly as possible. Some concerns related to fisheries biology which can arise with fish farming include the accidental release of farmed non-native fish into native populations, the spread of disease from fish farms to native fish species, and habitat destruction which can occur when fish farming is too intensive.

All The Science is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a All The Science researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

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Mary McMahon

Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

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