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For gathering of data on biometry and catch statistics, 5 mobile working group in the regions of Anzali, Kiashahr , Noshahr , Babolsar and Torkmen were involved from the start (2004.10.23) to the end of fishing season (2005.04.10). Gathered data were entered to the computer based on species. For data analysis different methods were undertaken such as Bertallanfy equation for growth parameter Beverton and Holt for total mortality rates, pauly's imperical model for natural mortality rate and cohort Analysis for biomass estimation. Total catch with taking into account of poaching, was estimated 15140 tons reported by scientific committee of catch and fishing harbor relief of Iranian Fishery Company. The total recorded catch of beach seine cooperatives was 10644 tons that comprise 70.2% of the total catch. Total catch of Caspian Kutum was estimated 6612 tons that had 1856 tons (22%) decrease with comparison of the last year. Biomass of Caspian kutum in Iranian coastal Water of the Caspian Sea in 2003-2004 estimated about 20400 tons. The total catch of golden gray mullet was estimated 4425.6 tons that constitute 29.2% of total catch of bony fishes. Biomass of this species was estimated 12200 tons and based on this amount of biomass, Maximum Sustainable Yield (MSY) was calculated as 3577 tons. Long nose mullet comprised only 1.4% of the mullet catch. The catch of common carp in 2004-2005 fishing season continued its increasing trend and caught in amount of 3087 tons by beach seine cooperatives that had 2.2 fold increase in comparison of previous fishing season. Most of the catch occurred in Golestan province and was immature and undersize and the length frequency modes showed moving towards bigger size and older age groups in comparison of previous fishing season. The catch of pick perch in 2003-2004 decreased with comparison of the last year and estimated about 22.5 tons. Most of the catch of pick perch was immature and undersize. Approximately all of the catch is due to releasing of fingerling of this species by Fishery Company especially in Guilan province. Total catch of bream was estimated 27.4 tons and most of which was immature and undersize. Population of asp is critically endangered and the catch of this species is very low (500 kg). Restocking of this species must be considered by Iranian fishing company.

For gathering of data on biometry and catch statistics, 5 mobile working group in the regions of Anzali, Kiashahr , Noshahr , Babolsar and Torkmen were involved from the start ( 2004/10/23 ) to the end of fishing season (2005/04/10 ). Gathered data were entered to the computer based on species. For data analysis different methods were undertaken such as Bertallanfy equation for growth parameter Beverton and Holt for total mortality rates, pauly's imperical model for natural mortality rate and cohort Analysis for biomass estimation. Total catch with taking into account of poaching, was estimated 15140 tons reported by scientific committee of catch and fishing harbor relief of Iranian Fishery Company. The total recorded catch of beach seine cooperatives was 10644 tons that comprise 70.2% of the total catch. Total catch of Caspian Kutum was estimated 6612 tons that had 1856 tons (22%) decrease with comparison of the last year. Biomass of Caspian kutum in Iranian coastal Water of the Caspian Sea in 2003-2004 estimated about 20400 tons. The total catch of golden gray mullet was estimated 4425.6 tons that constitute 29.2% of total catch of bony fishes. Biomass of this species was estimated 12200 tons and based on this amount of biomass, Maximum Sustainable Yield (MSY) was calculated as 3577 tons. Long nose mullet comprised only 1.4% of the mullet catch. The catch of common carp in 2004-2005 fishing season continued its increasing trend and caught in amount of 3087 tons by beach seine cooperatives that had 2.2 fold increase in comparison of previous fishing season. Most of the catch occurred in Golestan province and was immature and undersize and the length frequency modes showed moving towards bigger size and older age groups in comparison of previous fishing season. The catch of pick perch in 2003-2004 decreased with comparison of the last year and estimated about 22.5 tons. Most of the catch of pick perch was immature and undersize. Approximately all of the catch is due to releasing of fingerling of this species by Fishery Company especially in Guilan province. Total catch of bream was estimated 27.4 tons and most of which was immature and undersize. Population of asp is critically endangered and the catch of this species is very low (500 kg). Restocking of this species must be considered by Iranian fishing company. Iranian Fisheries Science Research Institute Published

For gathering of data on biometry and catch statistics, 5 mobile working group in the regions of Anzali , Kiashahr , Noshahr , Babolsar and Torkmen were involved from the start ( 2004 / 10 / 03 ) to the end of fishing season ( 2005 / 04 / 10 ) . gathered data Were entered to the computer based on species. For data analysis different methods Were undertaken such as Bertalanfy equation for growth parameter Beverton and Holt for total mortality rates, pauly's imperical model for natural mortality rate and cohort Analysis for biomass estimation. Totall catch with taking into account of pauching , estinmated 15500 tonnes reported by scientific committee of catch and fishing harbor relief of Iranian Fishery Company .The total recorded catch of beach seine cooperatives was 10667 tons that comprise 69% of the total catch . Total catch of Caspian Kutum was estimated 8477 tons that had 2500 tons decrease with comparison of the last year. Biomass of Caspian kutum in Iranian coastal Water of the Caspian sea in 2003 2004 estimated about 25000 tons. The catch of pick perch in 2003 2004 decreased with comparison of the last year and estimated about 38 tons from which 15 tons were caught by beach seine cooperatives . Most of the catch of pick perch was immature and undersize. Approximately all of the catch is due to releasing of fingerling of this species by fishery company. Totall catch of bream was estimated 26.3 tons from which 15.4 tons were caught by beach seine cooperatives . Most of which was immature and undersize. Iranian Fisheries Science Research Institute Published

For gathering of data on biometry and catch statfstics, 5, mobile working group in the regions of Anzali , Kiashahr , Noshahr , Babolsar and Torkaman . Were involved from the start to the end of fishing season. After gathering,data Were intered to the computer based on species. For data analysis different methods Were undertaken sach as Bertalanfy equation for growth parameter Beverton and Holt for total mortality rates, pauly's imperical model for natural mortality rate and cohort Analysis for biomas estimation. The total recorded Catch in 2001 and 2002 was 10529 and 9566 tonnes. Totall catch with taking into account of pauching . estinmated 16200 and 15200 tonnes .total catch of Katum in 2002 had 1200 tonnes decrease with comparison of last year. Biomass of kutum in IRanian coastal Water of the Caspian sea in 2002 estimated about 15000tonnes. The catch of golden mullet in 2001 and 2002 was estimated 4218 and 6183 tonnes.that about 29%-38% of the catch of this species was undersize .The biomass of golden mullet estimated about 16400 tonnes. The small nose mullet in 2002 comprise 9% of mullet catches. The catches of common carp in Anzali region was very low .but stocks of this species in Gorgan region is in better condition which.Most of catches of this species were fished illgally in the Gorgan bay and Gomishan coastal creek. The biomass of this species was estimated 1140 tonnes Most of catches of the roach.were fished illgally .Totall catches of this species in 2002 were estimated about 738 tonnes. The catch of pickperch in 2002 were estimated about 30 tonnes.Most of the chatch of pickperch was immature and undersize. Appooximattelly all of the catch is due to releasing of fingerling of this species by fishery company. Totall catch of bream in 2002 was estimated 38 tonnes that most of which was immature and undersize. Iranian Fisheries Science Research Institute Published

The brooders of kutum fishes, bream and pike-perch are caught in their spawning grounds, at the commence of spring season in west and eastem parts of Gilan. After eggs stripping and larva-culture until fingerlings size in hatchery, the seedling fishes are released through their natal rivers for down stream migration into Caspian Sea In the mentioned year 127.2* 10 Rutilushisii kutum fingerlings with the average weight of I .29 g and length of 4.8 Cm are produced. Considering the mean weight of fingerlings released in Gilants rivers, nearly 16 % fingerlings were under I grand weight group of 1-1.5 g comprised 68 % , Transportation procedures of fingerlings releasing lasted 5 months and further than 79% of fingerlings released in june-Agust (Peak of warm weather), this coincide with reduced water discharge and low depth in rivers . These ecological extremity needs to be carefully checked by assessment recruitment of stocked fingerlings into fishery. The brooders of kutum fishes, bream and pike-perch are caught in their spawning grounds, at the commence of spring season in west and eastem parts of Gilan. After eggs stripping and larvi-culture until fingerlings size in hatchery, the seedling fishes are released through their natal rivers for down stream migration into Caspian Sea In the mentioned year 127.2 10 Rutilusjhisii kutum fingerlings with the average weight of I .29 g and length of 4.8 Cm are produced. Considering the mean weight of fingerlings released in Gilants rivers, nearly 16 % fingerlings were under I grand weight group of 1-1.5 g comprised 68 % , Transportation procedures of fingerlings releasing lasted 5 months and further than 79% of fingerlings released in june-Agust (Peak of warm weather), this coincide with reduced water discharge and low depth in rivers . These ecological extremity needs to be carefully checked by assessment recruitment of stocked fingerlings into fishery. Iranian Fisheries Science Research Institute Published