We are pleased to offer the latest versions of four fisheries assessment software packages for downloading free from this website; Length Frequency Distribution Analysis (LFDA), Catch Effort Data Analysis (CEDA), Yield and ParFish. All four packages were developed by MRAG Ltd. as part of the Fisheries Management Science Programme for the UK Department for International Development. 

Participatory Fisheries Stock Assessment (ParFish) Software is a PC-based software package that uses Bayesian Statistics and Decision Theory to assess the state of a fishery stock and estimate limit and target control levels. The software supports the overall approach which is described in the accompanying…
Attachment Size
parfish_installer.zip4.8 MB 4.8 MB
parfishsoftwaremanual.zip2.35 MB 2.35 MB
parfishguidelines.zip3.88 MB 3.88 MB
parfishsupportingmaterial.zip1.16 MB 1.16 MB
Yield Version 1.0 is a program for calculating fishery yields and stock biomasses, on an absolute or per-recruit basis, and for calculating biological reference points associated with these. On starting the program, users are asked to enter values of biological parameters (e.g. growth, mortality, age at…
Attachment Size
yeild_installer.zip9.88 MB 9.88 MB
The Catch Effort Data Analysis package (CEDA) is a PC-based software package for analysing catch, effort and abundance index data. Version 3.0 allows calculation of estimates of current and unexploited stock sizes, catchability and associated population dynamics parameters. Both depletion and several types…
Attachment Size
ceda.zip6.06 MB 6.06 MB
The Length Frequency Distribution Analysis (LFDA) package is a PC-based computer package for estimating growth parameters and mortality rates from fish length frequency distributions. Version 5.0 of LFDA includes methods for estimating the parameters of both non-seasonal and seasonal versions of the von…
Attachment Size
lfda.zip6.25 MB 6.25 MB