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Related Experiment Video

Updated: May 6, 2026

Characterization Of Multi-layered Fish Scales Atractosteus spatula Using Nanoindentation, X-ray CT, FTIR, and SEM
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Identifying individual common carp Cyprinus carpio using scale pattern.

F A Huntingford1, F L Borçato, F O Mesquita

  • 1College of Medical, Veterinary and Life Sciences, University of Glasgow, Graham Kerr Building, University Avenue, Glasgow G12 8QQ, U.K.

Journal of Fish Biology
|October 18, 2013
PubMed
Summary
This summary is machine-generated.

Scale patterns on common carp (Cyprinus carpio) can be used for identification. This non-invasive method accurately identified fish from photographs taken at different times.

Keywords:
fish marksindividual differencesnon-invasive techniquesvisual fish identification

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Area of Science:

  • Ichthyology
  • Animal identification
  • Biometrics

Background:

  • Individual identification of fish is crucial for ecological and fisheries management.
  • Non-invasive methods are preferred to minimize stress and impact on fish populations.
  • Scale patterns offer a potentially unique and stable characteristic for fish identification.

Purpose of the Study:

  • To assess the reliability of common carp (Cyprinus carpio) scale patterns for non-invasive individual identification.
  • To determine if scale patterns remain consistent over time for accurate fish recognition.

Main Methods:

  • Photographs of common carp (Cyprinus carpio) were taken on two separate occasions.
  • Volunteers were tasked with matching photographs of the same individual fish.
  • Identification accuracy based on scale patterns was calculated.

Main Results:

  • Volunteers successfully matched photographs of the same common carp (Cyprinus carpio) with high accuracy.
  • Correct identification was achieved on 95.76% of occasions.
  • Scale patterns proved to be a reliable identifier for individual fish.

Conclusions:

  • Scale patterns provide a viable method for the non-invasive, long-term identification of common carp (Cyprinus carpio).
  • This technique can be valuable for population monitoring and research without harming the fish.