DPI Game Fish Tagging Program

The DPI Game Fish Tagging Program is the largest saltwater tagging program of its kind in the world and has been in operation since 1973.

It is used to obtain information on the biology (distribution, movement, growth, exploitation) of billfish, tunas, sharks and sport fish and encourages game fishers to participate in the management of the fishery.

Since the program commenced, over 410,000 tag cards have been returned and over 7000 fish recaptured. Of the 60 species recognised by the Game Fishing Association of Australia (GFAA) it has been found that 10 species of fish tagged by the DPI Game Fish Tagging Program account for 70% of all fish tagged.

These species include:

  • Black Marlin
  • Yellowfin Tuna
  • Yellowtail Kingfish
  • Sailfish
  • Mahi Mahi (Dolphinfish)
  • Mackerel Tuna
  • Striped Marlin
  • Striped Tuna
  • Albacore
  • Bonito

How the tagging program works

Tags are issued to anglers and when an angler catches a fish it is tagged and released. The details of the capture are recorded on a tag card with the corresponding tag number. The card is returned to DPI.

When a tagged fish is recaptured, catch information is linked to the original tag and release and compared to the recapture information. Details of the distance that the fish travelled and its growth are sent to the anglers who first tagged the fish and the anglers who recaptured it. A recapture certificate is also issued.

The tagging data is used by scientists to study the lives and habits of these fish species. The migratory habits of the tagged fish are observed by measuring the distance and direction travelled between tagging and recapture, and this can be linked with environmental factors. Growth patterns are also monitored.

The observations also enable scientists to study the structure of fish stocks and assess whether there is any mixing between populations that are geographically distant from one another. This information is vital to improve the understanding and management of valuable game and sport fish species.

Our data has been used in the following paper: Dispersal of Adult Black Marlin (Istiompax indica) from a Great Barrier Reef Spawning Aggregation.

Tagging maps

See the distribution of the three marlin species tagged under the NSW DPI Game Fish tagging Program over the last five years (1/7/10 – 30/6/15).

Saltwater fish species recommended for tagging

*To be tagged with the billfish tag only

  • Black Marlin
  • Blue Marlin
  • Striped Marlin
  • Sailfish
  • Swordfish
  • Spearfish

*Mackerels over 60cm and to be tagged with the pelagic tag only

  • Spanish Mackerel
  • Grey Mackerel
  • Spotted Mackerel
  • School Mackerel
  • Wahoo

*Tuna over 60cm and to be tagged with the pelagic tag only

  • Albacore
  • Big-eye
  • Dogtooth
  • Longtail
  • Mackerel
  • Striped (Skipjack)
  • Pacific Bluefin
  • Southern Bluefin
  • Yellowfin

*Sharks over 100cm and to be tagged with the steel-headed shark tag only

  • Blue
  • Hammerhead (In NSW waters, only Smooth Hammerheads can be tagged, Scalloped and Great Hammerheads are now listed as a protected species and are not to be tagged in NSW waters)
  • Tiger
  • Mako
  • Thresher
  • Whaler

*Carangids over 60cm and to be tagged with the pelagic tag only

  • Amberjack
  • Samsonfish
  • Yellowtail Kingfish (only fish over 70cm)
*Fish over 60cm to be tagged with the pelagic tag only
  • Dolphinfish (Mahi Mahi)
  • Cobia

Note: All other fish including freshwater, endangered, protected and vulnerable species are not to be tagged under the NSW DPI Game Fish Tagging Program. All tagging undertaken by DPI is research-based and coordinated to respond to specific research needs. The tagging program and the eligible species list are carefully managed and have associated animal welfare approval. Please contact DPI if you believe your local fishery has specific research requirements.

Contact the program

If you would like to contact the game fish tagging program for further information or to report a recapture directly, please get in touch using the below details:

Address Locked Mail Bag 3020, Nowra NSW 2541
Phone (02) 4424 7423
Phone (International) +61 2 4424 7423

Game Fish Tagging Program summaries

DPI records the boats and anglers that have provided exceptional contributions to the program over the past seasons.