Mass fish die-off

Report to Fishwatch

Report large numbers of dead fish or other aquatic animals to the 24 hour Fishwatch hotline.

Remaining dead fish from fish kills will often be cleaned up by:

  • animals or birds
  • natural tidal movement in coastal areas.

During blackwater events dead fish decompose rapidly due to the natural bacteria present.

Information to report

Important information to include when reporting:

  • location of dead fish, including longitude and latitude (if known)
  • your name and contact details
  • the species of organisms involved or a description if unknown
  • the number of dead organisms
  • size of area affected
  • when it occurred (if known)
  • current and expected weather conditions
  • tide details
  • any water discolouration.

Ensure you take a photo of the mass fish die off to assist with species identification.

Collecting samples

Fish or aquatic organisms

  • Collect visibly sick or dying organisms.
  • Store in a plastic bag and place in ice slurry.
  • Frozen samples may be acceptable in some cases.
  • Avoid contact with unprotected skin.

Water samples

  • Collect samples in a clean glass or plastic container.
  • Rinse the container several times in the water you are going to collect.
  • Fill the container approximately two-thirds full and seal.
  • Store at room temperature, except in extreme heat when it should be refrigerated but not frozen.

Contact Fishwatch for instructions on delivering the sample.

Contact Fishwatch

Call the 24-hour Fishwatch hotline for fishing information and reporting.

Freecall 1800 065 522
Page last reviewed: 22 Feb 2024

 


Top of page