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Purchasing our tags

Cefas Technology Limited
CTL's portfolio includes tags, readers and software. If offers a full range of technical, scientific and sales support.

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Returning tagged fish and shellfish

We regularly tag fish in experiments to record fish behaviour, growth and fishing catch rates.

Most of the commercial species have been subject to tagging on all major fishing grounds so there is always the chance of finding a tagged fish wherever you're fishing.

conventional-tags.jpgMark and recapture experiments use conventional "marker" tags (i.e., not data-storage or electronic tags). They can provide valuable insights into fish migrations and stock structure, which have important implications for fishery management. They can also provide useful information on growth and, in some circumstances, exploitation rates.

Electronic data storage tags (DSTs) allow scientists to continuously record the behaviour of individual fish between the points of release and recapture. This information helps us to interpret how fish live and respond to their environment.

The recovery of our tagged fish and the success of our tagging campaigns rely on the collaboration of the fishing industry and recreational anglers.

For more information about returning tagged species, visit one of the following pages:

It is very important to record the full recapture details, including:

  • the tag number and colour
  • the date the tag/fish was caught
  • where the tag/fish was caught (if possible latitude and longitude)
  • the sex, length and weight of the fish/shellfish.

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Last Modified: 27 April 2014