This is a good idea, I would like some more details please:
1) What is the market potential for the fish, the dynamics of this market, and the scale ability (and/or applicability) of this method assuming it is a success?
2) On diet, much of rural Tanzania is away from the coast and so fish may not part of their regular diet, chicken is more likely to be the white protein of choice - is this a challenge? How will you meet this issue?
3) I understand the location is 'Tanzania'. Can you be more specific as to where this implemented, and why? What are the considerations you are making for the location of your plant? Will you be targeting the urban lower-income demographic as well?
4) Will you monitor the impact on the surrounding rural community, or will you be more focused on the business elements of this project?