Page updated: 06 Oct 2025
This page provides public access to fish size (length) data collected from fishing activities in the Western and Central Pacific Ocean. These data help scientists and fisheries managers monitor fish populations and make sustainable decisions.
What Is Fish Size (Length) Data?
Fish size data means measurements of how long fish are when they’re caught. These measurements help track:
- Fish growth
- Health of fish populations
- Effectiveness of conservation measures
Why Is This Data Important?
By understanding the size of fish caught over time, we can:
- Detect overfishing or healthy trends
- Assess the impact of fishing rules
- Support long-term sustainability of tuna and other species in the region
Where Does the Data Come From?
The data are provided by Commission Members (CCMs) and Cooperating Non-members (CNMs). The WCPFC Secretariat compiles and shares this information following the official Rules and Procedures on Data Access and Protection (RAP).
What Can I Download?
Once you register, you’ll be able to download:
- Aggregated Fish Size (Length) Data
- Metadata and File Structure