Communication skill is the best seeling approach in business world, business could be anything where you can add fishery scientist also. You have to understand the communication skill not as a course material rather one should take it as the intigral part of personality. An emminent person whether he/she is a scientist, doctor, socialist, phillospher everyone gains the best response based on his communication skill.
Now come to your point that fishery scientist needs cmmunication skill, did you ask ever why a scientist needs such skill? what they do exactly? If you understand the nature and aptitude of a fishery scients then you will get the answers naturally. Get into the fishery world and extract the information at different level as fishery sciences has different classiications in terms of reseach and development, academic, commerce and business, as well as stretagic sector. And for each and every section manpower is appointed catagorically where scientist play a central role and having intercalating approach to convince the world with the product types.
You have to develop your stretegies in order to fit into the business of science and technology in bilateral and receprocative manner where the following factors are prevalents:
1. Self-motivation: It is the origin of your inherent personality which gives you to develop the cnfidence in any field of your intesrest.
2. Expressive: The art of expression includes your body language, mood and temperament, academic background for the best explainatin, convincing power, as well as simple approach to define any complex situation. Expression in writting and manuscripting is the most powerfull tool for a scientist by which a scientific shows runs and fellow scientists, junior scientist get benifitted.
3. True Professionalism: This part is as important as we discussed the other points which give the wholesme shape of your busincess and profession. You need to understand the meaning of true professinalism which never ask for helps from others, never be upset while making or taking an important deal in the office. Capacity to convert the negative atmsphere into positive or productive which benifits the office of governance and eventually provides the excellency in toto.
4. Indepth knwledge: Core subject matter is the central gravity so knowlege of subject matter is the soul of your communication skill. It does not matter how you are focused on applied aspect.

Try to understand the said points.
Good luck
Manoj