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Tilapia is a good selection of fish but I believe that it should not be your exclusive choice. There is a higher ratio of Omega-6 fatty acids to Omega-3 fatty acids in that variety of fish and that is OK - but not for every day.
My recommendation for seafood is to consume a wide variety of fish and shellfish. Tilapia one day and then salmon the next, followed by shrimp, for example. There are so many great choices that you may not have to repeat yourself twice in a month, even if you ate fish every other day. Catfish, tuna, shrimp, mussels, cod and drum are all very reasonably priced. For special occasions halibut, grouper, crab and lobster are delicious but a little higher priced.
By mixing it up you will get a wide variety of great nutrients.
Thanks for writing,
Timothy S. Harlan, MD, FACP