Hi dear candidate,
You can have numerous options for fishery jobs with fish farming, research and development in gulf countries, China, Japan and Norway which is one of the largest seafood markets. The visa process among all is easier in Japan for Indian citizens but you might need to learn Japanese as English might NOT be enough.
Make sure you also have done fishery course and if not know more at:
Fisheries Courses after 12th - Eligibility, Duration, Institute
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