Regular operational reviews ensure the continued efficiency of the various ASC standards. They are focused on areas where the performance of a particular standard is not as anticipated, or may not deliver on the intent as set out in the ASC’s Theory of Change.

Contact person:  Standards and Science Department

Review – Shrimp

The goal of the ASC standards is to provide a means to measurably improve the environmental and social performance of aquaculture operations. Each farm standard undergoes focused review every three to five years to ensure its continued effectiveness.

This standard revision is now complete. The main changes between ASC Shrimp Standard v1.1 and the revised v1.2, issued on 25 April 2022, are the addition of freshwater species (Cherax spp., Procambarus spp., Astacus spp. and Macrobrachium spp.) to the scope of the Standard and the inclusion of additional indicators to cover impacts of these species. The additional indicators are based on existing ASC standards for freshwater species. Additionally, metrics have been updated for all species. Most feedback received was based on the update of metrics as well as additional issues that were not in the scope of the revision. Footnotes, weblinks and several components of the guidance have been updated or removed. These non-substantive changes were not included in the consultation but are tracked and available for review on request. A summary of all metric changes post public consultation can be found here.

2 March 2020: 62-day Public Consultation on ASC Shrimp Standard

Status: Closed

ASC sought feedback on proposed changes to the ASC Shrimp Standard v1.1, with the intent of improving the reach and relevance in the upcoming revision.

New freshwater species – by expanding the scope of the Standard to include key freshwater species, more producers will be able to demonstrate their responsible production through certification. ASC proposed new metrics for existing Standard indicators for these species; a summary  (Doc #3) and full rationale for the proposed metrics (Doc #4) were submitted for consultation.

Additional indicators to the ASC Shrimp Standard have been added to ensure the environmental impacts of freshwater species are rigorously assessed. Through evaluation of ASC’s existing species standards,  proposed additional indicators  were drafted and sent for consultation, including a short summary (Doc #5) and background documents (Doc #6 & Doc#9).

Marine species revision – All metrics in v1.1 of the Shrimp Standard were revised based on current production and recent research. Feedback was sought to determine if metrics for P. vannamei and P. monodon could be used to certify other Penaeid shrimp species.  These proposals are outlined in a summary (Doc #7) and the rationale for the proposed metric changes (Doc #8) as well as the background document on new marine shrimp species (Doc #8a).

  • The Data Overview document (Doc #8) re. the Revision of Current Metrics was amended post-public consultation and can be found here.

Other changes

The proposed Shrimp Review amendments and considerations are undertaken concurrently with the release of the ASC’s new Metrics Methodology (also went to Public Consultation).

Based on recent research regarding detailed phylogenetic analyses of several shrimp within the family Penaidae (Ma et al., 2011) and the review by Flegel (2007) the Penaeus genus will be used for all potential new species. ASC will also apply this change to Penaues (Litopenaeus) vannamei within the version 1.2 of the ASC Shrimp Standard. In the interim, both genera can be used interchangeably (e.g. Penaeus (Litopenaeus) vannamei’) in the documents going through to Public Consultation.

  • For further information, please view the public webinar that was held on the 8th of April 2020 for all interested stakeholders:

The slides of the webinar can be downloaded here.

Update – December 2019

ASC is currently looking for farming (and/or research) data for the following species:

  • Giant tiger prawn – Penaeus monodon, 
  • Whiteleg shrimp – Penaeus vannamei
  • Giant freshwater prawn – Macrobrachium rosenbergii
  • Lousiana crawfish – Procambarus clarkii
  • Crayfish – Cherax spp. 

The data will be used for metric-setting and will be anonymised. Data is being sought for all criteria/indicators in the Shrimp Standard with a metrics dimension, and with a special focus those related to feed use, effluents and survival rate. For instance:

  • Chloride concentration or specific conductance;
  • Survival rate;
  • System type (fed and aerated, fed and non-permanently aerated, non-fed);
  • Stocking density (not covered in the current standard);
  • % PLs that are SPF or SPR;
  • %PLs from closed loop hatchery (origin of PLs);
  • % FM/FO in the diet (or general information on feed formulation used);
  • % non marine ingredients in the feed;
  • FFER (forage fish efficiency ratio, can be calculated from eFCR and %FM in the feed);
  • N effluent per tonne of shrimp;
  • P effluent per tonne of shrimp;
  • Settleable solids concentration in the outflow / data on general water quality;
  • eFCR;
  • Protein retention efficiency.

Please contact the Standards Team ( if you have any relevant data re. the above species. Thank you!


[Webpage last updated 22.04.2022]

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