Hello Sanjeev
There are wide range of scope for Veterinary graduates. They can work in government as well as private organisations. Candidates can work in pharmacy, poultry, dairy industries, etc.
After completion of fishery science course , candidates can work as fisheries biologist, Aqua Culturist, etc. After completion of this course also you can work in both private and government sector.
There decent scope after completion of both the courses. You should choose to opt the course according to your interest.
Good Luck!