The aim of this thesis was to find out the knowledge and the attitudes of the Eastern-Austria population (Vienna, Lower Austria, and Burgenland) in view of the issue fish. An online-survey was conducted where 362 persons (n♀=256, n♂=106) participated. The findings from the survey should provide insight into the consumer behaviours, knowledge and attitudes of different age groups and education levels. More than half the participants (55.5 %, n=292) come from Vienna, followed by Lower Austria (24.6 %, n=89) und Burgenland (19.6 %, n=71). The mean age of the persons questioned was 39 ± 12 years. The Body Mass Index (BMI) was on average 23.47 ± 4.01 kg/m² (in the range of normal weight). The survey carried out shows that the majority of the participants (37.8 %,n=137) has no knowledge in view of the topic fish. A third of the questioned people (33.4 %, n=121) has moderate knowledge, a quarter (25.7 %, n=93) shows insufficient knowledge. Altogether 11 persons have a good knowledge. None of the people interviewed has a very good knowledge. The examination of the hypotheses led to the following significant results: Women have a better knowledge with regard to fish than men (p<0.001). Persons of higher education level have a better knowledge than persons of lower education level (p<0.001). There is a significant difference between people of different age with regard to the frequency of fish consumption (p<0.001). The following hypotheses have been confirmed: ‘The higher the education level, the more fish is eaten (p<0.01)’ and ‘The higher the net household income, the more often fish is eaten (p<0.001]’. The net household income has an important impact (p<0.05) regarding the responsible purchase of fish (they pay attention to the fishing area)