Traceability of aquarium fish
Measurement answer
What this metric measures
Reports the percentage of organisms sourced for the marine aquarium trade that can be traced to their point of origin.
Specification
Metric specification
- Result format
- Single value
- Unit
- percent (%) of sourced organisms — source-defined reporting unit
- Reporting basis
- Reporting period; period specification is not provided in the supplied extract.
- Aggregation
- Calculate the proportion of sourced organisms that are traceable to their point of origin.
- Pillar
- Environmental
- Topic
- Origin traceability of organisms sourced for the marine aquarium trade
- Controlled domain
- Supply chain and value chain
- Entity type
- Metric
Reporting boundary
Organisms sourced for the reporting organization's marine aquarium trade value chain.
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 – Fishing v1.0, June 2025, Table 17, F.A22.1, p.87. | Supplied evidence summary for F.A22.1: report the percentage of sourced organisms that can be traced back to their point of origin. | Additional sector guidance – Fishing v1.0 (June 2025), p.87, Table 17, F.A22.1
- Adopting DisclosureF.A22.1
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Version 1.0, June 2025
- Requirement
- Recommended
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- Additional sector guidance – Fishing v1.0 (June 2025), p.87, Table 17, F.A22.1
Value structure
Dimensions and units
- Unit
- percent (%) of sourced organisms — source-defined reporting unit
- Reporting basis
- Reporting period; period specification is not provided in the supplied extract.
Unit meaning: Values use percent (%) of sourced organisms under the disclosed TNFD sector-guidance method, reporting period and boundary.
Published dimensions
- organism sourced
- point of origin
Calculation method
Formula information
- Status
- Specified
- Formula type
- Percentage
Formula
(Number of sourced organisms traceable to their point of origin / Total number of sourced organisms) × 100Apply the source-defined TNFD sector-guidance method within the stated reporting boundary. F.A22.1 explicitly specifies a reportable percentage outcome for sourced organisms. It is not equivalent to narrative disclosures about traceability systems because it measures the share of organisms with origin traceability.
Variables
| Symbol | Variable | Definition | Unit |
|---|---|---|---|
T | Traceable sourced organisms | Number of sourced organisms that can be traced back to their point of origin. | organisms |
S | Total sourced organisms | Total number of organisms sourced for the marine aquarium trade value chain. | organisms |
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 – Fishing v1.0, June 2025, Table 17, F.A22.1, p.87. | Supplied evidence summary for F.A22.1: report the percentage of sourced organisms that can be traced back to their point of origin. | Additional sector guidance – Fishing v1.0 (June 2025), p.87, Table 17, F.A22.1
Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Traceability of aquarium fish”.
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).
- Describe the method used to determine whether a sourced organism is traceable to its point of origin.
- State the population of sourced organisms used as the denominator.
- Describe the point-of-origin information used for traceability assessment.
Record-specific limitations
- The supplied extract specifies traceability to point of origin but does not define a reporting-period convention.
- The supplied extract does not provide a prescribed taxonomy, geographic granularity or verification method for sourced organisms.
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.