The main task of the Fish Resource Research Department is to ensure the implementation of Latvia National fisheries and Aquaculture Data Collection Working Plan when performing scientific assessment of fish resources, including the organisation and implementation of hydro-acoustic accounting of mid-water fish and trawls of groundfish as well as by collecting and analysing biological and fishing data regarding catch of internationally regulated species of fish as well as about economic and social condition of fisheries, fish product processing and aquaculture sectors.


Methods of collecting and processing of biological material

Baltic cod otolith collection protocol and age determination method

Baltic sprat age determination methodology

Age determination method of Baltic flatfishes

Collection and processing of pelagic fishes’ biological material

Guidelines for collecting biological data for assessing Atlantic salmon (Salmo salar) and brown trout (Salmo trutta) populations

Guidelines for collecting biological data for the assessment of European eel (Anguilla anguilla) stock

Manual for age determination of Baltic herring

Sampling and treatment of Ichthyoplankton samples

Method for Sampling, Analysis, and Data Processing of Zooplankton Samples

Method for determining age and biological parameters of Round Goby

Methods for Collecting and Processing Oceanographic and Meteorological Data