Hallprint’s range of externally visible individual ID fish tags have provided researchers with a cost-effective and reliable solution to conducting studies on both wild fish populations and aquaculture species for almost 4 decades. Our range of shellfish and finfish tags have been recognised globally by leading scientists for their long term tag retention rates and for remaining readable over very long periods of time. We are very proud of the superior quality of our service, experienced scientific advice and products as evidenced by a large number of recent recaptures of different finfish and shark species from different locations around the globe that had been at liberty for over 25 years with the tags completely intact and readable.