Marine feed ingredient sourcing — FishSource score and lowest category
Measurement answer
What this metric measures
Reports the Combined FishSource Score for each marine feed ingredient and the lowest FishSource category score among fisheries supplying that ingredient.
Specification
Metric specification
- Result format
- Structured table
- Unit
- FishSource score and FishSource category — source-defined reporting unit
- Reporting basis
- Reporting period covered by the TNFD disclosure
- Aggregation
- Reported for each marine feed ingredient, with the lowest FishSource category score identified among fisheries supplying that ingredient
- Pillar
- Environmental
- Topic
- Aquaculture marine feed ingredient sourcing and fishery status
- Controlled domain
- Nature, biodiversity and land
- Entity type
- Metric
Reporting boundary
Marine feed ingredients used by the organization and the fisheries supplying those ingredients
Verified source occurrences
Framework coverage
This is one canonical metric. The bindings below show every verified framework occurrence without creating duplicate metric pages. Edition, disclosure, role, and relationship remain source-specific.
- Adopting DisclosureSource evidence
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Requirement
- Not Specified
- Relationship
- Defines Disclosure
- Mapping outcome
- Direct Evidence
- Source locator
- TNFD, Additional sector guidance for aquaculture, core sector metrics table, p. 74, official metric code A.C3.4. | Extracted evidence: “Reports the Combined FishSource Score for each marine feed ingredient and identifies the lowest FishSource category score among the fisheries supplying those ingredients.” | Page 74, core sector metrics table, A.C3.4
- Adopting DisclosureA.C3.4
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Version 1.0, June 2024
- Requirement
- Conditional
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- Page 74, core sector metrics table, A.C3.4
Value structure
Dimensions and units
- Unit
- FishSource score and FishSource category — source-defined reporting unit
- Reporting basis
- Reporting period covered by the TNFD disclosure
Unit meaning: Values use FishSource score and FishSource category under the disclosed TNFD sector-guidance method, reporting period and boundary.
Table fields and units
- Marine feed ingredient
- Supplying fishery or fishery coverage description
- Combined FishSource Score
- Lowest FishSource category score
- FishSource methodology/version and score date
Published dimensions
- Marine feed ingredient
- Supplying fishery
- Combined FishSource Score
- Lowest FishSource category score among supplying fisheries
Disclosure method
Formula information
- Status
- Not applicable
- Formula type
- Structured Disclosure
Disclosure form
No single formulaReport the source-defined result with its stated fields and method disclosures. The TNFD Aquaculture metric specifies a reportable score-and-category result by marine feed ingredient. It is not the same construct as the shortlisted resource-efficiency policies or marine-resource disclosures, and its third-party scoring methodology must remain an identified method dependency rather than being represented as a TNFD-created scoring formula.
Verified sources
Evidence and status sources
Sustopedia checked each record-specific claim directly against primary publisher material. Labels distinguish current measurement authority from future compatibility and corroborative, legal, edition, or method status context. Corroborative evidence can support a stated limitation but cannot establish the core measurement by itself.
Measurement evidence
- Measurement evidenceChecked 30 August 2026
TNFD additional sector guidance collection
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Locator
- TNFD, Additional sector guidance for aquaculture, core sector metrics table, p. 74, official metric code A.C3.4. | Extracted evidence: “Reports the Combined FishSource Score for each marine feed ingredient and identifies the lowest FishSource category score among the fisheries supplying those ingredients.” | Page 74, core sector metrics table, A.C3.4
Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Marine feed ingredient sourcing — FishSource score and lowest category”.
Open official source
Use with context
Interpretation boundaries
Method disclosures required
Source-edition basis: TNFD sector guidance, Final English sector guidance collection through August 2026 (17 documents).
- Identify each marine feed ingredient covered.
- Identify the fisheries supplying each ingredient or describe the supplier/fishery traceability boundary used.
- Report the Combined FishSource Score for each marine feed ingredient.
- Identify the lowest FishSource category score among fisheries supplying each ingredient.
- State the FishSource methodology, version, score date, and treatment of unavailable fishery data.
Record-specific limitations
- The disclosure depends on the applicable FishSource score and category methodology; that methodology is not reproduced in the extracted TNFD evidence.
- A lowest category result is a conservative supplier-level characteristic and should not be interpreted as an average score across supplying fisheries unless separately disclosed.
Interpret this metric with the stated reporting boundary, period convention, value shape, and unit. Results prepared with different boundaries or conventions may not be directly comparable.
Measurement evidence supports the core record-specific claims described above. Corroborative evidence can support limitations, while compatibility and status sources provide their separately labelled context. None of these cards by itself determines an organisation's legal applicability, filing readiness, assurance status, or compliance conclusion.