Fisheries science - short course or M.Sc?
Hello Nayana,
it is not quite clear if you would like to study in a short training course (diploma track) or in a master's degree (M.Sc.). Both are available in Israel, taught in English and suitable for international students.
Regarding the short courses, they are more suitable for trained and experienced personnel from the agricultural field that wish to gain new skills.
These courses can be found in in situations such as Galilee International Management Institute, Golda Meir Institute, The Arava International Trainee Center, and several others. You can read more about the courses in the article I have linked for you (the link is below my answer).
If however you had another academic track in mind, please do let me know and I will help you find the most suitable track for you.