In this thesis a review of the latest literature on the effects of fishing gear and catching methods on quality of catch was given, with a particular dedication on the effect of hooks, lines and trawls on post-mortem quality changes in fish. A recently developed catch damage index method was described as a useful tool for assessment of injuries sustained during fishing activities in commercially important species. Impact of fishing and post-mortem handling on the quality of fish flesh is significant and reflected in acceleration of post-mortem changes, denaturation of proteins, reduction in water holding capacity, flash color and taste as well as overall presentation of the fish. Literature describes many experimental fishing methods and gear improvements aimed at reducing the impact of the fishing gear and there for improve the product’s quality on the market. Application of the post-catch methods for reduction of stress and delay of post-mortem reactions (recovery from exhaustive swimming, stunning the fish with electricity, proper exsanguination immediately after catch and evisceration) reduce the post-mortem changes in fish resulting in better quality and easier marketing, however, require additional time and personnel.