Management of trawl by-catch with reference to Visakhapatnam Fishing Harbor: Andhra Pradesh, India

Abstract
Trawl fishery is a mixed fishery targeting numerous species including consequential huge amounts of non-targeted species, referred to as low value bycatch/trash fish. The aim of the present study is to analyse the composition of trawl bycatch and its management in view of its proper utilization for aqua feed. Random samples of trash fish were collected fortnightly between March 2019 and February 2020 from single day and multi day trawler landings at Visakhapatnam Fishing Harbour (VFH). The preliminary process of utilizing the landed trash fish at VFH is observed. The results of the study revealed the presence of 38 dominant species of finfish and shellfish, representing the families, Leiognathidae, Trichiuridae, Mullidae, Clupeidae and Nemipteridae with 29.73%, 22.5%, 18.69%, 11.96% and 10.59% respectively of 609.991 tons total landing during the study period. The highest landing is 83.362 t reported in the month of Feb, 2019 and lowest landing is 32.2 t reported in the month of Oct, 2020. The study concludes that considerable trash fish composition is being landed at VFH, causing the necessity for Entrepreneurs, to pay immediate attention towards the utilization of total trawl bycatch in terms of converting it into feed and supply to aquaculture and poultry industries. Further research will be beneficial for policy makers to address better trawl bycatch management options.