Data Portals

DATRAS format description

All surveys submitted to DATRAS have to adopt a unified format. The format consists of three basic types of records that describe hauls, length distribution and age-related biological data, plus one additional record type for litter data 

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Each submission consists of data from a single survey, country, year, quarter, ship and gear.

​Submissions require a single file with the three record types one after the other, each one preceded by a row of headers.​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ The three record types (HH, HL and CA) are linked by a few common fields, including those identifying the submission plus the haul and station IDs.​

In this spreadsheet you can read the descriptions of all the available fields in the DATRAS format and get a template file with all headers:


DATRAS_Field_descriptions_and_example_file_May2022.xlsx

HH record type

There are 67 available fields in this record type describing the date, time, coordinates, gear specifications and many other environmental conditions for each haul.

HL record type

In this record type, length distribution of species are described. There are up to 26 available fields that allow this type of recording, including subsampling schemes and categorisation of the catch.

CA record type

This record type is linked with HL records by species and length class. In the CA record type, there are 31 available fields that allow the reporting of age, maturity and several other biological measurements such as genetic, stomach and liver samplings, among others.

​LT record type

Litter data records are submitted in separate files and consists of 21 fields describing the number, weight, and nature of each litter item caught in each haul. For the submission to be successful the corresponding HH records must already exist in the database.


See details of mandatory fields per survey here.​




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DATRAS format description

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