Dear Aspirant, for a fishery scientist or any branch of science or any other field besides academic qualifications, the interpersonal skills and technical skills are very important.
Let me explain you in detail, the academics makes you technically qualified, this shows that you know the subject and you have a required qualification. By acquiring academic degree you become eligible to get a job.
Whatever we have studied or learned in our masters or doctoral degree program, becomes obsolete (not all but some) after some time. You have to update yourself by reading latest books, latest research articles and discussion among your colleagues. This will keep you update and definitely help you to boost your career and also cast an impression on others (students, colleagues, superiors and clients) that you have advanced knowledge of your field. You should also undergo some training programs related to subject and the instruments used in your field.

Another very importnat skill is interpersonal skill. Interpersonal skills are life skills which we use daily to communicate or interact with individuals or in a group. The people who have worked on their interpersonal skills are more successful in their personal and professional life. People with good interpersonal skills are considered a calm, confident, charismatic and optimistic.
The common interpersonal skills are;
1 verbal communication skill; what you say and how you say it
2. non verbal communication skill; we do not say a word but our body language conveys the meaning
3. Listening skills; how we interpret the verbal and non verbal message sent by others
4. Negotiation skills; while working with others how we come to a common conclusion
5. Problem solving; working with others, how you solve the problems amicably
6. Decision making; Exploring and analyzing options to make sound decisions