I think it is a good idea, assuming the market size actually exists. There is a lot of imported tilapia around, and the fresh and/or live market is probably not enormous. But maybe it's bigger than I think.
The other thing I didn't see in that op-ed was a plan to deal with the tilapia waste. It can be used as fertilizer for plants, but to do that you need some plants. For 5 million tilapia, you need a whole lot of plants.
Bookmarks