It would make an interesting topic for a B.Sc. thesis project, but I suspect you will need to plan well ahead of time. It would be valuable because pufferfish have huge commercial value as food fish, and their meat is a high-value item, making them exactly the sort of thing that is attractive to aquaculturists. (Think: salmon, seabass, halibut, etc.)
They are also used in genomics work because they have the smallest genome of any vertebrate, making it easier to map the genes than, say, a human.
There are aquaculture experiments on Takifugu spp. puffers already, so do some research on that, if you need to sell the project to a supervisor. Otherwise, all the aquarium trade puffers are wild-caught. No-one has established a sure-fire method for breeding puffers, to the best of my knowledge.
Cheers,
Neale