Beach seine fishermen are organized in 141 working groups. Fishing for sturgeon is restricted to the state owned company due to conservation concerns. The catch of sturgeon resources is controlled exclusively by the Fisheries Research Organization in collaboration with the Deputy for Fishing and Ports Affairs. Kilka resources have been exploited totally by the private sector, operating motorized vessels equipped with conical nets and light attractors. Southern fisheries Industrial and semi-industrial fishing fleets carry out almost all fisheries in the Persian Gulf and the Oman Sea.
Many boats use a combination of fishing gear.
Inland fisheries and aquaculture The production of farmed fish has risen constantly since 1985, and expanded rapidly due to the very suitable environmental conditions and climate diversity in Iran. Inland fisheries extend to over 1.5 million ha. Rivers, natural lakes, artificial reservoirs, irrigation canals, aqueducts and ponds are used for fish culture, organized as fish farms. The most popular species are sturgeon, white fish, pike-perch, salmon, rainbow trout and carp. Since 1968, when the first hatchery was established, significant progress has been made in aquaculture development.